TI-83 Plus and TI-84 Plus Function Reference

Version 1.0

December 14, 2011

Welcome to the first version of Calcblog’s complete TI-83 Plus and TI-84 Plus graphing calculator function appendix. You can use the index below to scroll down to the function you want to learn more about. Of course, not all information is necessarily correct, and there are probably errors since this is the first revision of this resource. We hope you find this article useful—send any additional information our way and we’ll make sure it’s changed and that you get credit!

Note that some functions can only be reached from within the program editor. All can be reached through the catalog, which can be reached by pressing 2nd 0.

Function Result Keystrokes
(arguments)   Submenu or Item
     
abs(value) Returns the absolute value of a real MATH
  number, expression, list, or matrix. NUM
    1:abs(
abs(complex value) Returns the magnitude of a complex MATH
  number or list. CPX
    5:abs(
valueA and valueB Returns 1 if both valueA and valueB 2ndMATH
  are ≠ 0. valueA and valueB can be LOGIC
  real numbers, expressions, or lists. 1:and
angle(value) Returns the polar angle of a complex MATH
  number or list of complex numbers. CPX
    4:angle(
ANOVA(list1,list2 Performs a one-way analysis of STAT
[,list3,…,list20]) variance for comparing the means of TESTS
  two to 20 populations. F:ANOVA(
Ans Returns the last answer. 2nd(-)
Archive Moves the specified variables from 2nd+
  RAM to the user data archive 5:Archive
  memory.  
Asm(assemblyprgmname) Executes an assembly language 2nd0
  program. Asm(
AsmComp(prgmASM1, Compiles an assembly language 2nd0
prgmASM2) program written in ASCII and stores AsmComp(
  the hex version.  
AsmPrgm Must be used as the first line of an 2nd0
  assembly language program. AsmPrgm
augment(matrixA, Returns a matrix, which is matrixB 2ndx-1
matrixB) appended to matrixA as new MATH
  columns. 7:augment(
augment(listA,listB) Returns a list, which is listB 2ndSTAT
  concatenated to the end of listA. OPS
    9:augment(
AxesOff Turns off the graph axes. 2ndZOOM
    AxesOff
AxesOn Turns on the graph axes. 2ndZOOM
    AxesOn
a+bi Sets the mode to rectangular MODE
  complex number mode (a+bi). a+bi
bal(npmt[,roundvalue]) Computes the balance at npmt for an APPS 1:Finance
  amortization schedule using stored CALC
  values for PV, I%, and PMT and 9:bal(
  rounds the computation to  
  roundvalue.  
binomcdf(numtria) Computes a cumulative probability at 2ndVARS
  x for the discrete binomial distribution DISTR
  with the specified numtrials and A:binomcdf(
  probability p of success on each trial.  
binompdf(numtrials,p[,x])  Computes a probability at x for the 2ndVARS
  discrete binomial distribution with the DISTR
  specified numtrials and probability p 0:binompdf(
  of success on each trial.  
X²cdf(lowerbound, Computes the X² distribution 2ndVARS
upperbound,df) probability between lowerbound and DISTR
  upperbound for the specified degrees 7:X²cdf(
  of freedom df.  
X²pdf(x,df) Computes the probability density 2ndVARS
  function (pdf) for the X² distribution at DISTR
  a specified x value for the specified 6:X²pdf(
  degrees of freedom df.  
X²-Test(observedmatrix, Performs a chi-square test. STAT
expectedmatrix drawflag=1 draws results; TESTS
[,drawflag]) drawflag=0 calculates results. C:X²-Test(
Circle(X,Y,radius) Draws a circle with center (X,Y) and 2ndPRGM
  radius. DRAW
    9:Circle(
Clear Entries Clears the contents of the Last Entry 2nd+
  storage area. MEMORY
    3:Clear Entries
ClrAllLists Sets to 0 the dimension of all lists in 2nd+
  memory. MEMORY
    4:ClrAllLists
ClrDraw Clears all drawn elements from a 2ndPRGM
  graph or drawing. DRAW
    1:ClrDraw
ClrHome Clears the home screen. PRGM
    I/O
    8:ClrHome
ClrList listname1 Sets to 0 the dimension of one or STAT
[,listname2, …, more listnames. EDIT
listname n]   4:ClrList
ClrTable Clears all values from the table. PRGM
    I/O
    9:ClrTable
conj(value) Returns the complex conjugate of a MATH
  complex number or list of complex CPX
  numbers. 1:conj(
Connected Sets connected plotting mode; resets MODE
  all Y= editor graph-style settings to \. Connected
CoordOff Turns off cursor coordinate value 2ndZOOM
  display. CoordOff
CoordOn Turns on cursor coordinate value 2ndZOOM
  display. CoordOn
cos(value) Returns cosine of a real number, COS
  expression, or list.  
cos-1(value) Returns arccosine of a real number, 2ndCOS
  expression, or list.  
cosh(value) Returns hyperbolic cosine of a real 2nd0
  number, expression, or list. cosh(
cosh-1(value) Returns hyperbolic arccosine of a 2nd0
  real number, expression, or list. cosh-1(
CubicReg [Xlistname, Fits a cubic regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 6:CubicReg
  regression equation to regequ.  
cumSum(list) Returns a list of the cumulative sums 2ndSTAT
  of the elements in list, starting with OPS
  the first element. 6:cumSum(
cumSum(matrix) Returns a matrix of the cumulative 2ndx-1
  sums of matrix elements. Each MATH
  element in the returned matrix is a 0:cumSum(
  cumulative sum of a matrix column  
  from top to bottom.  
dbd(date1,date2) Calculates the number of days APPS 1:Finance
  between date1 and date2 using the CALC
  actual-day-count method. D:dbd(
value→Dec Displays a real or complex number, MATH
  expression, list, or matrix in decimal MATH
  format. 2:→Dec
Degree Sets degree angle mode. MODE
    Degree
DelVar variable Deletes from memory the contents of PRGM
  variable. CTL
    G:DelVar
DependAsk Sets table to ask for dependent- 2ndWINDOW
  variable values. Depend: Ask
DependAuto Sets table to generate dependent- 2ndWINDOW
  variable values automatically. Depend: Auto
det(matrix) Returns determinant of matrix. 2ndx-1
    MATH
    1:det(
DiagnosticOff Sets diagnostics-off mode; r, r², and 2nd0
  R² are not displayed as regression DiagnosticOff
  model results.  
DiagnosticOn Sets diagnostics-on mode; r, r², and 2nd0
  R² are displayed as regression DiagnosticOn
  model results.  
dim(listname) Returns the dimension of listname. 2ndSTAT
    OPS
    3:dim(
dim(matrixname) Returns the dimension of 2ndx-1
  matrixname as a list. MATH
    3:dim(
length→dim(listname) Assigns a new dimension (length) to a 2ndSTAT
  new or existing listname. OPS
    3:dim(
{rows,columns}→ Assigns new dimensions to a new or 2ndx-1
dim(matrixname) existing matrixname. MATH
    3:dim(
Disp Displays the home screen. PRGM
    I/O
    3:Disp
Disp [valueA,valueB, Displays each value. PRGM
valueC,…,value n]   I/O
    3:Disp
DispGraph Displays the graph. PRGM
    I/O
    4:DispGraph
DispTable Displays the table. PRGM
    I/O
    5:DispTable
value→DMS Displays value in DMS format. 2ndAPPS
    ANGLE
    4:→DMS
Dot Sets dot plotting mode; resets all Y= MODE
  editor graph-style settings to dot mode. Dot
DrawF expression Draws expression (in terms of X) on 2ndPRGM
  the graph. DRAW
    6:DrawF
DrawInv expression Draws the inverse of expression by 2ndPRGM
  plotting X values on the y-axis and Y DRAW
  values on the x-axis. 8:DrawInv
: DS<(variable,value) Decrements variable by 1; skips PRGM
: commandA commandA if variable < value. CTL
: commands   B:DS<(
e^(power) Returns e raised to power. 2ndLN
e^(list) Returns a list of e raised to a list of 2ndLN
  powers.  
Exponent: Returns value times 10 to the 2nd,
valueEexponent exponent.  
Exponent: Returns list elements times 10 to the 2nd,
listEexponent exponent.  
Exponent: Returns matrix elements times 10 to 2nd,
matrixEexponent the exponent.  
→Eff(nominal rate, Computes the effective interest rate. APPS 1:Finance
compounding periods)   CALC
    C:→Eff(
Else    
See If:Then:Else    
End Identifies end of For(, If–Then–Else, PRGM
  Repeat, or While loop. CTL
    7:End
Eng Sets engineering display mode. MODE
    Eng
Equ→String(Y= var,Strn) Converts the contents of a Y= var to 2nd0
  a string and stores it in Strn. Equ→String(
expr(string) Converts string to an expression and 2nd0
  executes it. expr(
ExpReg [Xlistname, Fits an exponential regression model STAT
Ylistname,freqlist,regequ]  to Xlistname and Ylistname with CALC
  frequency freqlist, and stores the 0:ExpReg
  regression equation to regequ.  
ExprOff Turns off the expression display 2ndZOOM
  during TRACE. ExprOff
ExprOn Turns on the expression display 2ndZOOM
  during TRACE. ExprOn
Fcdf(lowerbound, Computes the F distribution 2ndVARS
upperbound, probability between lowerbound and DISTR
numerator df, upperbound for the specified 9:Fcdf(
denominator df) numerator df (degrees of freedom)  
  and denominator df.  
Fill(value,matrixname) Stores value to each element in 2ndx-1
  matrixname. MATH
    4:Fill(
Fill(value,listname) Stores value to each element in 2ndSTAT
  listname. OPS
    4:Fill(
Fix # Sets fixed-decimal mode for # of MODE
  decimal places. 123456789
    (select one)
Float Sets floating decimal mode. MODE
    Float
fMax(expression,variable, Returns the value of variable where MATH
lower,upper[,tolerance]) the local maximum of expression MATH
  occurs, between lower and upper, 7:fMax(
  with specified tolerance.  
fMin(expression,variable, Returns the value of variable where MATH
lower,upper[,tolerance]) the local minimum of expression MATH
  occurs, between lower and upper, 6:fMin(
  with specified tolerance.  
fnInt(expression,variable, Returns the function integral of MATH
lower,upper[,tolerance]) expression with respect to variable, MATH
  between lower and upper, with 9:fnInt(
  specified tolerance.  
FnOff [function#, Deselects all Y= functions or VARS
function#,…,function n] specified Y= functions. Y-VARS On/Off
    2:FnOff
FnOn [function#, Selects all Y= functions or specified VARS
function#,…,function n] Y= functions. Y-VARS On/Off
    1:FnOn
:For(variable,begin,end Executes commands through End, PRGM
[,increment]) incrementing variable from begin by CTL
:commands increment until variable>end. 4:For(
:End    
:commands    
fPart(value) Returns the fractional part or parts of MATH
  a real or complex number, NUM
  expression, list, or matrix. 4:fPart(
Fpdf(x,numerator df, Computes the F distribution 2ndVARS
denominator df) probability between lowerbound and DISTR
  upperbound for the specified 8:Fpdf(
  numerator df (degrees of freedom)  
  and denominator df.  
value→Frac Displays a real or complex number, MATH
  expression, list, or matrix as a fraction MATH
  simplified to its simplest terms. 1:→Frac
Full Sets full screen mode. MODE
    Full
Func Sets function graphing mode. MODE
    Func
GarbageCollect Displays the garbage collection 2nd0
  menu to allow cleanup of unused GarbageCollect
  archive memory.  
gcd(valueA,valueB) Returns the greatest common divisor MATH
  of valueA and valueB, which can be NUM
  real numbers or lists. 9:gcd(
geometcdf(p,x) Computes a cumulative probability at 2ndVARS
  x, the number of the trial on which DISTR
  the first success occurs, for the E:geometcdf(
  discrete geometric distribution with  
  the specified probability of success p.  
geometpdf(p,x) Computes a probability at x, the 2ndVARS
  number of the trial on which the first DISTR
  success occurs, for the discrete D:geometpdf(
  geometric distribution with the  
  specified probability of success p.  
Get(variable) Gets data from the CBL 2™/CBL™ or PRGM
  CBR™ System and stores it in variable. I/O
    A:Get(
GetCalc(variable) Gets contents of variable on another PRGM
  TI-8X Plus and stores it to variable on I/O
  the receiving TI-8X Plus. 0:GetCalc(
getKey Returns the key code for the current PRGM
  keystroke, or 0, if no key is pressed. I/O
    7:getKey
Goto label Transfers control to label. PRGM
    CTL
    0:Goto
GraphStyle(function#, Sets a graphstyle for function#. PRGM
graphstyle#)   CTL
    H:GraphStyle(
GridOff Turns off grid format. 2ndZOOM
    GridOff
GridOn Turns on grid format. 2ndZOOM
    GridOn
G-T Sets graph-table vertical split-screen MODE
  mode. G-T
Horiz Sets horizontal split-screen mode. MODE
    Horiz
Horizontal y Draws a horizontal line at y. 2ndPRGM
    DRAW
    3:Horizontal
identity(dimension) Returns the identity matrix of 2ndx-1
  dimension rows × dimension MATH
  columns. 5:identity(
:If condition If condition = 0 (false), skips PRGM
:commandA commandA. CTL
:commands   1:If
:If condition Executes commands from Then to PRGM
:Then End if condition = 1 (true). CTL
:commands   2:Then
:End    
:commands    
:If condition Executes commands from Then to PRGM
:Then Else if condition = 1 (true); from Else CTL
:commands to End if condition = 0 (false). 3:Else
:Else    
:commands    
:End    
:commands    
imag(value) Returns the imaginary (nonreal) part MATH
  of a complex number or list of CPX
  complex numbers. 3:imag(
IndpntAsk Sets table to ask for independent- 2ndWINDOW
  variable values. Indpnt: Ask
IndpntAuto Sets table to generate independent- 2ndWINDOW
  variable values automatically. Indpnt: Auto
Input Displays graph. PRGM
    I/O
    1:Input
Input [variable] Prompts for value to store to PRGM
Input ["text",variable] variable. I/O
    1:Input
     
Input [Strn,variable] Displays Strn and stores entered PRGM
  value to variable. I/O
    1:Input
inString(string,substring Returns the character position in 2nd0
[,start]) string of the first character of inString(
  substring beginning at start.  
int(value) Returns the largest integer ≤ a real or MATH
  complex number, expression, list, or NUM
  matrix. 5:int(
GInt(pmt1,pmt2 Computes the sum, rounded to APPS 1:Finance
[,roundvalue]) roundvalue, of the interest amount CALC
  between pmt1 and pmt2 for an A:GInt(
  amortization schedule.  
invNorm(area[,μ,σ]) Computes the inverse cumulative 2ndVARS
  normal distribution function for a DISTR
  given area under the normal 3:invNorm(
  distribution curve specified by μ and  
  σ.  
iPart(value) Returns the integer part of a real or MATH
  complex number, expression, list, or NUM
  matrix. 3:iPart(
irr(CF0,CFList[,CFFreq])  Returns the interest rate at which the APPS 1:Finance
  net present value of the cash flow is CALC
  equal to zero. 8:irr(
:IS>(variable,value) Increments variable by 1; skips PRGM
:commandA commandA if variable>value. CTL
:commands   A:IS>(
Llistname Identifies the next one to five 2ndSTAT
  characters as a user-created list OPS
  name. B:L
LabelOff Turns off axes labels. 2ndZOOM
    LabelOff
LabelOn Turns on axes labels. 2ndZOOM
    LabelOn
Lbl label Creates a label of one or two PRGM
  characters. CTL
    9:Lbl
lcm(valueA,valueB) Returns the least common multiple of MATH
  valueA and valueB, which can be NUM
  real numbers or lists. 8:lcm(
length(string) Returns the number of characters in 2nd0
  string. length(
Line(X1,Y1,X2,Y2) Draws a line from (X1,Y1) to (X2,Y2). 2ndPRGM
    DRAW
    2:Line(
Line(X1,Y1,X2,Y2,0) Erases a line from (X1,Y1) to 2ndPRGM
  (X2,Y2). DRAW
    2:Line(
LinReg(a+bx) [Xlistname,  Fits a linear regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 8:LinReg(a+bx)
  regression equation to regequ.  
LinReg(ax+b) [Xlistname,  Fits a linear regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 4:LinReg(ax+b)
  regression equation to regequ.  
LinRegTTest [Xlistname, Performs a linear regression and a STAT
Ylistname,freqlist, t-test. alternative=-1 is <; TESTS
alternative,regequ] alternative=0 is ≠ alternative=1 is >. E:LinRegTTest
ΔList(list) Returns a list containing the 2ndSTAT
  differences between consecutive OPS
  elements in list. 7:ΔList(
List→matr(listname1,…, Fills matrixname column by column 2ndSTAT
listname n,matrixname) with the elements from each specified OPS
  listname. 0:List→matr(
ln(value) Returns the natural logarithm of a LN
  real or complex number, expression,  
  or list.  
LnReg [Xlistname, Fits a logarithmic regression model STAT
Ylistname,freqlist, to Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 9:LnReg
  regression equation to regequ.  
log(value) Returns logarithm of a real or LOG
  complex number, expression, or list.  
Logistic [Xlistname, Fits a logistic regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the B:Logistic
  regression equation to regequ.  
Matr→list(matrix, Fills each listname with elements 2ndSTAT
listnameA,…,listname n) from each column in matrix. OPSA:Matr→list(
Matr→list(matrix, Fills a listname with elements from a 2ndSTAT
column#,listname) specified column# in matrix. OPSA:Matr→list(
max(valueA,valueB) Returns the larger of valueA and MATH
  valueB. NUM
    7:max(
max(list) Returns largest real or complex 2ndSTAT
  element in list. MATH
    2:max(
max(listA,listB) Returns a real or complex list of the 2ndSTAT
  larger of each pair of elements in listA MATH
  and listB. 2:max(
max(value,list) Returns a real or complex list of the 2ndSTAT
  larger of value or each list element. MATH
    2:max(
mean(list[,freqlist]) Returns the mean of list with 2ndSTAT
  frequency freqlist. MATH
    3:mean(
median(list[,freqlist]) Returns the median of list with 2ndSTAT
  frequency freqlist. MATH
    4:median(
Med-Med [Xlistname, Fits a median-median model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 3:Med-Med
  regression equation to regequ.  
Menu("title","text1",label1 Generates a menu of up to seven PRGM
[,…,"text7",label7]) items during program execution. CTL
    C:Menu(
min(valueA,valueB) Returns smaller of valueA and MATH
  valueB. NUM
    6:min(
min(list) Returns smallest real or complex 2ndSTAT
  element in list. MATH
    1:min(
min(listA,listB) Returns real or complex list of the 2ndSTAT
  smaller of each pair of elements in MATH
  listA and listB. 1:min(
min(value,list) Returns a real or complex list of the 2ndSTAT
  smaller of value or each list element. MATH
    1:min(
valueA nCr valueB Returns the number of combinations MATH
  of valueA taken valueB at a time. PRB
    3:nCr
value nCr list Returns a list of the combinations of MATH
  value taken each element in list at a PRB
  time. 3:nCr
list nCr value Returns a list of the combinations of MATH
  each element in list taken value at a PRB
  time. 3:nCr
listA nCr listB Returns a list of the combinations of MATH
  each element in listA taken each PRB
  element in listB at a time. 3:nCr
nDeriv(expression,variable, Returns approximate numerical MATH
value[,ε]) derivative of expression with respect MATH
  to variable at value, with specified ε. 8:nDeriv(
→Nom(effective rate, Computes the nominal interest rate. APPS 1:Finance
compounding periods)   CALC
    B:→Nom(
Normal Sets normal display mode. MODE
    Normal
normalcdf(lowerbound, Computes the normal distribution 2ndVARS
upperbound[,μ,σ]) probability between lowerbound and DISTR
  upperbound for the specified μ and 2:normalcdf(
  σ.  
normalpdf(x[,μ,σ]) Computes the probability density 2ndVARS
  function for the normal distribution at DISTR
  a specified x value for the specified μ 1:normalpdf(
  and σ.  
not(value) Returns 0 if value is ≠ 0. value can 2ndMATH
  be a real number, expression, or list. LOGIC
    4:not(
valueA nPr valueB Returns the number of permutations MATH
  of valueA taken valueB at a time. PRB
    2:nPr
value nPr list Returns a list of the permutations of MATH
  value taken each element in list at a PRB
  time. 2:nPr
list nPr value Returns a list of the permutations of MATH
  each element in list taken value at a PRB
  time. 2:nPr
listA nPr listB Returns a list of the permutations of MATH
  each element in listA taken each PRB
  element in listB at a time. 2:nPr
npv(interest rate,CF0, Computes the sum of the present APPS 1:Finance
CFList[,CFFreq]) values for cash inflows and outflows. CALC
    7:npv(
valueA or valueB Returns 1 if valueA or valueB is ≠ 0. 2ndMATH
  valueA and valueB can be real LOGIC
  numbers, expressions, or lists. 2:or
Output(row,column, Displays text beginning at specified PRGM
"text") row and column. I/O
    6:Output(
Output(row,column, Displays value beginning at specified PRGM
value) row and column. I/O
    6:Output(
Param Sets parametric graphing mode. MODE
    Par
Pause Suspends program execution until PRGM
  you press ENTER. CTL
    8:Pause
Pause [value] Displays value; suspends program PRGM
  execution until you press ENTER. CTL
    8:Pause
Plot#(type,Xlistname, Defines Plot# (1, 2, or 3) of type 2ndY=
Ylistname,mark) Scatter or xyLine for Xlistname and PLOTS
  Ylistname using mark. 1:Plot1-
    2:Plot2-
    3:Plot3-
Plot#(type,Xlistname, Defines Plot# (1, 2, or 3) of type 2ndY=
freqlist) Histogram or Boxplot for Xlistname PLOTS
  with frequency freqlist. 1:Plot1-
    2:Plot2-
    3:Plot3-
Plot#(type,Xlistname, Defines Plot# (1, 2, or 3) of type 2ndY=
freqlist,mark) ModBoxplot for Xlistname with PLOTS
  frequency freqlist using mark. 1:Plot1-
    2:Plot2-
    3:Plot3-
Plot#(type,datalistname, Defines Plot# (1, 2, or 3) of type 2ndY=
data axis,mark) NormProbPlot for datalistname on PLOTS
  data axis using mark. data axis can 1:Plot1-
  be X or Y. 2:Plot2-
    3:Plot3-
PlotsOff [1,2,3] Deselects all stat plots or one or 2ndY=
  more specified stat plots (1, 2, or 3). STAT PLOTS
    4:PlotsOff
PlotsOn [1,2,3] Selects all stat plots or one or more 2ndY=
  specified stat plots (1, 2, or 3). STAT PLOTS
    5:PlotsOn
Pmt_Bgn Specifies an annuity due, where APPS 1:Finance
  payments occur at the beginning of CALC
  each payment period. F:Pmt_Bgn
Pmt_End Specifies an ordinary annuity, where APPS 1:Finance
  payments occur at the end of each CALC
  payment period. E:Pmt_End
poissoncdf(μ,x) Computes a cumulative probability at 2ndVARS
  x for the discrete Poisson distribution DISTR
  with specified mean μ. C:poissoncdf(
poissonpdf(μ,x) Computes a probability at x for the 2ndVARS
  discrete Poisson distribution with the DISTR
  specified mean μ. B:poissonpdf(
Polar Sets polar graphing mode. MODE
    Pol
complex value→ Polar Displays complex value in polar MATH
  format. CPX
    7:→Polar
PolarGC Sets polar graphing coordinates 2ndZOOM
  format. PolarGC
prgmname Executes the program name. PRGM
    CTRL
    D:prgm
ΣPrn(pmt1,pmt2 Computes the sum, rounded to APPS 1:Finance
[,roundvalue]) roundvalue, of the principal amount CALC
  between pmt1 and pmt2 for an 0:ΣPrn(
  amortization schedule.  
prod(list[,start,end]) Returns product of list elements 2ndSTAT
  between start and end. MATH
    6:prod(
Prompt variableA Prompts for value for variableA, then PRGM
[,variableB,…,variable n] variableB, and so on. I/O
    2:Prompt
1-PropZInt(x,n Computes a one-proportion z STAT
[,confidence level]) confidence interval. TESTS
    A:1-PropZInt(
2-PropZInt(x1,n1,x2,n2 Computes a two-proportion z STAT
[,confidence level]) confidence interval. TESTS
    B:2-PropZInt(
1-PropZTest(p0,x,n Computes a one-proportion z test. STAT
[,alternative,drawflag]) alternative=-1 is <; alternative=0 is TESTS
  ≠ alternative=1 is >. drawflag=1 5:1-PropZTest(
  draws results; drawflag=0 calculates  
  results.  
2-PropZTest(x1,n1,x2,n2 Computes a two-proportion z test. STAT
[,alternative,drawflag]) alternative=-1 is <; alternative=0 is TESTS
  ≠ alternative=1 is >. drawflag=1 6:2-PropZTest(
  draws results; drawflag=0 calculates  
  results.  
Pt-Change(x,y) Reverses a point at (x,y). 2ndPRGM
    POINTS
    3:Pt-Change(
Pt-Off(x,y[,mark]) Erases a point at (x,y) using mark. 2ndPRGM
    POINTS
    2:Pt-Off(
Pt-On(x,y[,mark]) Draws a point at (x,y) using mark. 2ndPRGM
    POINTS
    1:Pt-On(
PwrReg [Xlistname, Fits a power regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the A:PwrReg
  regression equation to regequ.  
Pxl-Change(row,column) Reverses pixel at (row,column); 2ndPRGM
  0 ≤ row ≤ 62 and 0 ≤ column ≤ 94. POINTS
    6:Pxl-Change(
Pxl-Off(row,column) Erases pixel at (row,column); 2ndPRGM
  0 ≤ row ≤ 62 and 0 ≤ column ≤ 94. POINTS
    5:Pxl-Off(
Pxl-On(row,column) Draws pixel at (row,column); 2ndPRGM
  0 ≤ row ≤ 62 and 0 ≤ column ≤ 94. POINTS
    4:Pxl-On(
pxl-Test(row,column) Returns 1 if pixel (row, column) is on, 2ndPRGM
  0 if it is off; 0 ≤ row ≤ 62 and POINTS
  0 ≤ column ≤ 94. 7:pxl-Test(
P→Rx(r,θ) Returns X, given polar coordinates r 2ndAPPS
  and θ or a list of polar coordinates. ANGLE
    7:P→Rx(
P→Ry(r,θ) Returns Y, given polar coordinates r 2ndAPPS
  and θ or a list of polar coordinates. ANGLE
    8:P→Ry(
QuadReg [Xlistname, Fits a quadratic regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 5:QuadReg
  regression equation to regequ.  
QuartReg [Xlistname, Fits a quartic regression model to STAT
Ylistname,freqlist, Xlistname and Ylistname with CALC
regequ] frequency freqlist, and stores the 7:QuartReg
  regression equation to regequ.  
Radian Sets radian angle mode. MODE
    Radian
rand[(numtrials)] Returns a random number between 0 MATH
  and 1 for a specified number of trials PRB
  numtrials. 1:rand
randBin(numtrials,prob Generates and displays a random MATH
[,numsimulations]) real number from a specified PRB
  Binomial distribution. 7:randBin(
randInt( lower,upper Generates and displays a random MATH
[,numtrials]) integer within a range specified by PRB
  lower and upper integer bounds for a 5:randInt(
  specified number of trials numtrials.  
randM(rows,columns) Returns a random matrix of rows (1– 2ndx-1
  99) × columns (1–99). MATH
    6:randM(
randNorm(μ,σ[,numtrials])  Generates and displays a random MATH
  real number from a specified Normal PRB
  distribution specified by μ and σ for a 6:randNorm(
  specified number of trials numtrials.  
re^θi Sets the mode to polar complex MODE
  number mode (re^θi). re^θi
Real Sets mode to display complex results MODE
  only when you enter complex Real
  numbers.  
real(value) Returns the real part of a complex MATH
  number or list of complex numbers. CPX
    2:real(
RecallGDB n Restores all settings stored in the 2ndPRGM
  graph database variable GDBn. STO
    4:RecallGDB
RecallPic n Displays the graph and adds the 2ndPRGM
  picture stored in Picn. STO
    2:RecallPic
complex value→Rect Displays complex value or list in MATH
  rectangular format. CPX
    6:→Rect
RectGC Sets rectangular graphing 2ndZOOM
  coordinates format. RectGC
ref(matrix) Returns the row-echelon form of a 2ndx-1
  matrix. MATH
    A:ref(
:Repeat condition Executes commands until condition PRGM
:commands is true. CTL
:End   6:Repeat
:commands    
Return Returns to the calling program. PRGM
    CTL
    E:Return
round(value[,#decimals]) Returns a number, expression, list, MATH
  or matrix rounded to #decimals ≤• 9). NUM
    2:round(
*row(value,matrix,row) Returns a matrix with row of matrix 2ndx-1
  multiplied by value and stored in row. MATH
    E:*row(
row+(matrix,rowA,rowB)  Returns a matrix with rowA of matrix 2ndx-1
  added to rowB and stored in rowB. MATH
    D:row+(
*row+(value,matrix, Returns a matrix with rowA of matrix 2ndx-1
rowA,rowB) multiplied by value, added to rowB, MATH
  and stored in rowB. F:*row+(
rowSwap(matrix,rowA, Returns a matrix with rowA of matrix 2ndx-1
rowB) swapped with rowB. MATH
    C:rowSwap(
rref(matrix) Returns the reduced row-echelon 2ndx-1
  form of a matrix. MATH
    B:rref(
R→Pr(x,y) Returns r, given rectangular 2ndAPPS
  coordinates x and y or a list of ANGLE
  rectangular coordinates. 5:R→Pr(
R→Pθ(x,y) Returns θ, given rectangular 2ndAPPS
  coordinates x and y or a list of ANGLE
  rectangular coordinates. 6:R→Pθ(
2-SampFTest [listname1,  Performs a two-sample F test. STAT
listname2,freqlist1, alternative=-1 is <; alternative=0 is TESTS
freqlist2,alternative, ≠; alternative=1 is >. drawflag=1 D:2-SampFTest
drawflag] draws results; drawflag=0 calculates  
(Data list input) results.  
2-SampFTest Sx1,n1, Performs a two-sample F test. STAT
Sx2,n2[,alternative, alternative=-1 is <; alternative=0 is TESTS
drawflag] ≠; alternative=1 is >. drawflag=1 D:2-SampFTest
(Summary stats input) draws results; drawflag=0 calculates  
  results.  
2-SampTInt [listname1, Computes a two-sample t confidence STAT
listname2, interval. pooled=1 pools variances; TESTS
freqlist1,freqlist2, pooled=0 does not pool variances. 0:2-SampTInt
confidence level,pooled]    
(Data list input)    
2-SampTInt x̄1,Sx1,n1, Computes a two-sample t confidence STAT
x̄2,Sx2,n2 interval. pooled=1 pools variances; TESTS
[,confidence level,pooled] pooled=0 does not pool variances. 0:2-SampTInt
(Summary stats input)    
2-SampTTest [listname1, Computes a two-sample t test. STAT
listname2,freqlist1, alternative=-1 is <; alternative=0 is TESTS
freqlist2,alternative, ≠; alternative=1 is >. pooled=1 pools 4:2-SampTTest
pooled,drawflag] variances; pooled=0 does not pool  
(Data list input) variances. drawflag=1 draws results;  
  drawflag=0 calculates results.  
2-SampTTest x̄1,Sx1,n1, Computes a two-sample t test. STAT
x̄2,Sx2,n2[,alternative, alternative=-1 is <; alternative=0 is TESTS
pooled,drawflag] ≠; alternative=1 is >. pooled=1 pools 4:2-SampTTest
(Summary stats input) variances; pooled=0 does not pool  
  variances. drawflag=1 draws results;  
  drawflag=0 calculates results.  
2-SampZInt(s1,s2 Computes a two-sample z STAT
[,listname1,listname2, confidence interval. TESTS
freqlist1,freqlist2,   9:2-SampZInt(
confidence level])    
(Data list input)    
2-SampZInt(s1,s2, Computes a two-sample z STAT
x̄1,n1,x̄2,n2 confidence interval. TESTS
[,confidence level])   9:2-SampZInt(
(Summary stats input)    
2-SampZTest(s1,s2 Computes a two-sample z test. STAT
[,listname1,listname2, alternative=-1 is <; alternative=0 is TESTS
freqlist1,freqlist2, ≠; alternative=1 is >. drawflag=1  
alternative,drawflag]) draws results; drawflag=0 calculates 3:2-SampZTest(
(Data list input) results.  
2-SampZTest(s1,s2, Computes a two-sample z test. STAT
x̄1,n1,x̄2,n2 alternative=L1 is <; alternative=0 is TESTS
[,alternative,drawflag]) ≠; alternative=1 is >. drawflag=1  
(Summary stats input) draws results; drawflag=0 calculates 3:2-SampZTest(
  results.  
Sci Sets scientific notation display mode. MODE
    Sci
Select(Xlistname, Selects one or more specific data 2ndSTAT
Ylistname) points from a scatter plot or xyLine OPS
  plot (only), and then stores the 8:Select(
  selected data points to two new lists,  
  Xlistname and Ylistname.  
Send(variable) Sends contents of variable to the PRGM
  CBL 2/CBL or CBR System. I/O
    B:Send(
seq(expression,variable, Returns list created by evaluating 2ndSTAT
begin,end[,increment]) expression with regard to variable, OPS
  from begin to end by increment. 5:seq(
Seq Sets sequence graphing mode. MODE
    Seq
Sequential Sets mode to graph functions MODE
  sequentially. Sequential
SetUpEditor Removes all list names from the stat STAT
  list editor, and then restores list EDIT
  names L1 through L6 to columns 1 5:SetUpEditor
  through 6.  
SetUpEditor listname1 Removes all list names from the stat STAT
[,listname2,…, list editor, then sets it up to display EDIT
listname20] one or more listnames in the 5:SetUpEditor
  specified order, starting with column  
  1  
Shade(lowerfunc, Draws lowerfunc and upperfunc in 2ndPRGM
upperfunc[,Xleft,Xright, terms of X on the current graph and DRAW
pattern,patres]) uses pattern and patres to shade the 7:Shade(
  area bounded by lowerfunc,  
  upperfunc, Xleft, and Xright.  
ShadeX²(lowerbound, Draws the density function for the X² 2ndVARS
upperbound,df) distribution specified by degrees of DRAW
  freedom df and shades the area 3:ShadeX²(
  between lowerbound and  
  upperbound.  
ShadeF(lowerbound, Draws the density function for the F 2ndVARS
upperbound, distribution specified by numerator df DRAW
numerator df, and denominator df and shades the 4:ShadeF(
denominator df) area between lowerbound and  
  upperbound.  
ShadeNorm(lowerbound, Draws the normal density function 2ndVARS
upperbound[,μ,σ]) specified by μ and σ and shades the DRAW
  area between lowerbound and 1:ShadeNorm(
  upperbound.  
Shade_t(lowerbound, Draws the density function for the 2ndVARS
upperbound,df) Student-t distribution specified by DRAW
  degrees of freedom df, and shades 2:Shade_t(
  the area between lowerbound and  
  upperbound.  
Simul Sets mode to graph functions MODE
  simultaneously. Simul
sin(value) Returns the sine of a real number, SIN
  expression, or list.  
sin-1(value) Returns the arcsine of a real number, 2ndSIN
  expression, or list.  
sinh(value) Returns the hyperbolic sine of a real 2nd0
  number, expression, or list. sinh(
sinh-1(value) Returns the hyperbolic arcsine of a 2nd0
  real number, expression, or list. sinh-1(
SinReg [iterations, Attempts iterations times to fit a STAT
Xlistname,Ylistname, sinusoidal regression model to CALC
period,regequ] Xlistname and Ylistname using a C:SinReg
  period guess, and stores the  
  regression equation to regequ.  
solve(expression,variable, Solves expression for variable, given MATH
guess,{lower,upper}) an initial guess and lower and upper MATH
  bounds within which the solution is 0:solve(
  sought.  
SortA(listname) Sorts elements of listname in 2ndSTAT
  ascending order. OPS1:SortA(
SortA(keylistname, Sorts elements of keylistname in 2nd STAT
dependlist1[,dependlist2,  ascending order, then sorts each OPS
…,dependlist n]) dependlist as a dependent list. 1:SortA(
SortD(listname) Sorts elements of listname in 2ndSTAT
  descending order. OPS2:SortD(
SortD(keylistname, Sorts elements of keylistname in 2ndSTAT
dependlist1[,dependlist2,  descending order, then sorts each OPS
…, dependlist n]) dependlist as a dependent list. 2:SortD(
stdDev(list[,freqlist]) Returns the standard deviation of the 2ndSTAT
  elements in list with frequency MATH
  freqlist. 7:stdDev(
Stop Ends program execution; returns to PRGM
  home screen. CTL
    F:Stop
Store: value→variable Stores value in variable. STO→
StoreGDB n Stores current graph in database 2ndPRGM
  GDBn. STO
    3:StoreGDB
StorePic n Stores current picture in picture Picn. 2ndPRGM
    STO
    1:StorePic
String4Equ(string,Y= var) Converts string into an equation and 2nd0
  stores it in Y= var. String4Equ(
sub(string,begin,length) Returns a string that is a subset of 2nd0
  another string, from begin to length. sub(
sum(list[,start,end]) Returns the sum of elements of list 2ndSTAT
  from start to end. MATH
    5:sum(
tan(value) Returns the tangent of a real TAN
  number, expression, or list.  
tan-1(value) Returns the arctangent of a real 2nd TAN
  number, expression, or list.  
Tangent(expression,value) Draws a line tangent to expression at 2ndPRGM
  X=value. DRAW
    5:Tangent(
tanh(value) Returns hyperbolic tangent of a real 2nd0
  number, expression, or list. tanh(
tanh-1(value) Returns the hyperbolic arctangent of 2nd0
  a real number, expression, or list. tanh-1(
tcdf(lowerbound, Computes the Student-t distribution 2ndVARS
upperbound,df) probability between lowerbound and DISTR
  upperbound for the specified degrees 5:tcdf(
  of freedom df.  
Text(row,column,text1, Writes text on graph beginning at 2ndPRGM
text2,…,text n) pixel (row,column), where DRAW
  0 ≤ row ≤ 57 and 0 ≤ column ≤ 94. 0:Text(
Then    
See If:Then    
Time Sets sequence graphs to plot with 2ndZOOM
  respect to time. Time
TInterval [listname, Computes a t confidence interval. STAT
freqlist,confidence level]   TESTS
(Data list input)   8:TInterval
TInterval x̄,Sx,n Computes a t confidence interval. STAT
[,confidence level]   TESTS
(Summary stats input)   8:TInterval
tpdf(x,df) Computes the probability density 2ndVARS
  function (pdf) for the Student-t DISTR
  distribution at a specified x value with 4:tpdf(
  specified degrees of freedom df.  
Trace Displays the graph and enters TRACE
  TRACE mode.  
T-Test μ0[,listname, Performs a t test with frequency STAT
freqlist,alternative, freqlist. alternative=-1 is <; TESTS
drawflag] alternative=0 is ≠; alternative=1 is >. 2:T-Test
(Data list input) drawflag=1 draws results;  
  drawflag=0 calculates results.  
T-Test μ0, x̄,Sx,n Performs a t test with frequency STAT
[,alternative,drawflag] freqlist. alternative=-1 is < ; TESTS
(Summary stats input) alternative=0 is ≠ ; alternative=1 is 2:T-Test
  >. drawflag=1 draws results;  
  drawflag=0 calculates results.  
tvm_FV[(N,I%,PV,PMT, Computes the future value. APPS 1:Finance
P/Y,C/Y)]   CALC
    6:tvm_FV
tvm_I%[(N,PV,PMT,FV, Computes the annual interest rate. APPS 1:Finance
P/Y,C/Y)]   CALC
    3:tvm_I%(
tvm_N[(I%,PV,PMT,FV, Computes the number of payment APPS 1:Finance
P/Y,C/Y)] periods. CALC
    5:tvm_N(
tvm_Pmt[(N,I%,PV,FV, Computes the amount of each APPS 1:Finance
P/Y,C/Y)] payment. CALC
    2:tvm_Pmt
tvm_PV[(N,I%,PMT,FV, Computes the present value. APPS 1:Finance
P/Y,C/Y)]   CALC
    4:tvm_PV
UnArchive Moves the specified variables from 2nd+
  the user data archive memory to 6:UnArchive
  RAM.  
  To archive variables, use Archive.  
uvAxes Sets sequence graphs to plot u(n) on 2ndZOOM
  the x-axis and v(n) on the y-axis. uv
uwAxes Sets sequence graphs to plot u(n) on 2ndZOOM
  the x-axis and w(n) on the y-axis. uw
1-Var Stats [Xlistname, Performs one-variable analysis on STAT
freqlist] the data in Xlistname with frequency CALC
  freqlist. 1:1-Var Stats
2-Var Stats [Xlistname, Performs two-variable analysis on STAT
Ylistname,freqlist] the data in Xlistname and Ylistname CALC
  with frequency freqlist. 2:2-Var Stats
variance(list[,freqlist]) Returns the variance of the elements 2ndSTAT
  in list with frequency freqlist. MATH
    8:variance(
Vertical x Draws a vertical line at x. 2ndPRGM
    DRAW
    4:Vertical
vwAxes Sets sequence graphs to plot v(n) on 2ndZOOM
  the x-axis and w(n) on the y-axis. vw
Web Sets sequence graphs to trace as 2ndZOOM
  webs. Web
:While condition Executes commands while condition PRGM
:commands is true. CTL
:End   5:While
:command    
valueA xor valueB Returns 1 if only valueA or valueB = 2ndMATH
  0. valueA and valueB can be real LOGIC
  numbers, expressions, or lists. 3:xor
ZBox Displays a graph, lets you draw a box ZOOM
  that defines a new viewing window, ZOOM
  and updates the window. 1:ZBox
ZDecimal Adjusts the viewing window so that ZOOM
  ΔX=0.1 and ΔY=0.1, and displays the ZOOM
  graph screen with the origin centered 4:ZDecimal
  on the screen.  
ZInteger Redefines the viewing window using ZOOM
  these dimensions: ZOOM
  ΔX=1  Xscl=10 8:ZInteger
  ΔY=1  Yscl=10  
ZInterval σ[,listname, Computes a z confidence interval. STAT
freqlist,confidence level]   TESTS
(Data list input)   7:ZInterval
ZInterval σ,x̄,n Computes a z confidence interval. STAT
[,confidence level]   TESTS
(Summary stats input)   7:ZInterval
Zoom In Magnifies the part of the graph that ZOOM
  surrounds the cursor location. ZOOM
    2:Zoom In
Zoom Out Displays a greater portion of the ZOOM
  graph, centered on the cursor ZOOM
  location. 3:Zoom Out
ZoomFit Recalculates Ymin and Ymax to ZOOM
  include the minimum and maximum ZOOM
  Y values, between Xmin and Xmax, 0:ZoomFit
  of the selected functions and replots  
  the functions.  
ZoomRcl Graphs the selected functions in a ZOOM
  user-defined viewing window. MEMORY
    3:ZoomRcl
ZoomStat Redefines the viewing window so ZOOM
  that all statistical data points are ZOOM
  displayed. 9:ZoomStat
ZoomSto Immediately stores the current ZOOM
  viewing window. MEMORY
    2:ZoomSto
ZPrevious Replots the graph using the window ZOOM
  variables of the graph that was MEMORY
  displayed before you executed the 1:ZPrevious
  last ZOOM instruction.  
ZSquare Adjusts the X or Y window settings ZOOM
  so that each pixel represents an ZOOM
  equal width and height in the 5:ZSquare
  coordinate system, and updates the  
  viewing window.  
ZStandard Replots the functions immediately, ZOOM
  updating the window variables to the ZOOM
  default values. 6:ZStandard
Z-Test(μ0,σ[,listname, Performs a z test with frequency STAT
freqlist,alternative, freqlist. alternative=-1 is <; TESTS
drawflag]) alternative=0 is ≠; alternative=1 is >. 1:Z-Test(
(Data list input) drawflag=1 draws results;  
  drawflag=0 calculates results.  
Z-Test(μ0,σ,x̄,n Performs a z test. alternative=-1 is <; STAT
[,alternative,drawflag]) alternative=0 is ≠; alternative=1 is >. TESTS
(Summary stats input) drawflag=1 draws results; 1:Z-Test(
  drawflag=0 calculates results.  
ZTrig Replots the functions immediately, ZOOM
  updating the window variables to ZOOM
  preset values for plotting trig 7:ZTrig
  functions.  
Factorial: value! Returns factorial of value. MATH
    PRB
    4:!
Factorial: list! Returns factorial of list elements. MATH
    PRB
    4:!
Degrees notation: value° Interprets value as degrees; 2ndAPPS
  designates degrees in DMS format. ANGLE
    1:°
Radian: angler Interprets angle as radians. 2ndAPPS
    ANGLE
    3:r
Transpose: matrixT Returns a matrix in which each 2ndx-1
  element (row, column) is swapped MATH
  with the corresponding element 2:T
  (column, row) of matrix.  
xthrootx√value Returns xthroot of value. MATH
    MATH
    5:x√(
xthrootx√list Returns xthroot of list elements. MATH
    MATH
    5:x√(
listx√value Returns list roots of value. MATH
    MATH
    5:x√(
listAx√listB Returns listA roots of listB. MATH
    MATH
    5:x√(
Cube: value³ Returns the cube of a real or MATH
  complex number, expression, list, or MATH
  square matrix. 3:³
Cube root: ³√(value) Returns the cube root of a real or MATH
  complex number, expression, or list. MATH
    4:³√(
Equal: valueA=valueB Returns 1 if valueA = valueB. 2ndMATH
  Returns 0 if valueA ≠ valueB. valueA TEST
  and valueB can be real or complex 1:=
  numbers, expressions, lists, or  
  matrices.  
Not equal: valueA≠valueB Returns 1 if valueA ≠ valueB. 2nd MATH
  Returns 0 if valueA = valueB. valueA TEST
  and valueB can be real or complex 2:≠
  numbers, expressions, lists, or  
  matrices.  
Less than: valueA<valueB Returns 1 if valueA < valueB. 2ndMATH
  Returns 0 if valueA ≥ valueB. valueA TEST
  and valueB can be real or complex 5:<
  numbers, expressions, or lists.  
Greater than: Returns 1 if valueA > valueB. 2ndMATH
valueA>valueB Returns 0 if valueA ≤ valueB. valueA TEST
  and valueB can be real or complex 3:>
  numbers, expressions, or lists.  
Less than or equal: Returns 1 if valueA ≤ valueB. 2ndMATH
valueA≤valueB Returns 0 if valueA > valueB. valueA TEST
  and valueB can be real or complex 6:≤
  numbers, expressions, or lists.  
Greater than or equal: Returns 1 if valueA ≥ valueB. 2ndMATH
valueA≥valueB Returns 0 if valueA < valueB. valueA TEST
  and valueB can be real or complex 4:≥
  numbers, expressions, or lists.  
Inverse: value-1 Returns 1 divided by a real or x-1
  complex number or expression.  
Inverse: list-1 Returns 1 divided by list elements. x-1
Inverse: matrix-1 Returns matrix inverted. x-1
Square: value² Returns value multiplied by itself. x²
  value can be a real or complex  
  number or expression.  
Square: list² Returns list elements squared. x²
Square: matrix² Returns matrix multiplied by itself. x²
Powers: value^power Returns value raised to power. value ^
  can be a real or complex number or  
  expression.  
Powers: list^power Returns list elements raised to ^
  power.  
Powers: value^list Returns value raised to list elements. ^
Powers: matrix^power Returns matrix elements raised to ^
  power.  
Negation: –value Returns the negative of a real or (-)
  complex number, expression, list, or  
  matrix.  
Power of ten: 10^(value) Returns 10 raised to the value 2ndLOG
  power. value can be a real or  
  complex number or expression.  
Power of ten: 10^(list) Returns a list of 10 raised to the list 2ndLOG
  power.  
Square root: √(value) Returns square root of a real or 2ndx²
  complex number, expression, or list.  
Multiplication: Returns valueA times valueB. x
valueA*valueB    
Multiplication: Returns value times each list x
value*list element.  
Multiplication: Returns each list element times x
list*value value.  
Multiplication: Returns listA elements times listB x
list*listB elements.  
Multiplication: Returns value times matrix x
value*matrix elements.  
Multiplication: Returns matrixA times matrixB. x
matrixA*matrixB    
Division: valueA / valueB Returns valueA divided by valueB. ÷
Division: list / value Returns list elements divided by ÷
  value.  
Division: value / list Returns value divided by list ÷
  elements.  
Division: listA / listB Returns listA elements divided by ÷
  listB elements.  
Addition: valueA + valueB Returns valueA plus valueB. +
Addition: list + value Returns list in which value is added +
  to each list element.  
Addition: listA + listB Returns listA elements plus listB +
  elements.  
Addition: Returns matrixA elements plus +
matrixA + matrixB matrixB elements.  
Concatenation: Concatenates two or more strings. +
string1 + string2    
Subtraction: Subtracts valueB from valueA. —
valueA – valueB    
Subtraction: Subtracts list elements from value. —
value – list    
Subtraction: Subtracts value from list elements. —
list – value    
Subtraction: Subtracts listB elements from listA —
listA – listB elements.  
Subtraction: Subtracts matrixB elements from —
matrixA – matrixB matrixA elements.  
Minutes notation: Interprets minutes angle 2ndAPPS
degrees°minutes'seconds" measurement as minutes. ANGLE 2:’
Seconds notation: Interprets seconds angle ALPHA+
degrees°minutes'seconds" measurement as seconds.  

Some information from the TI-83 / TI-83 Plus Graphing Calculator Guidebook, © 2001-2003 Texas Instruments.