Solving Systems of Linear Equations with Row Reduction on the TI-83 Plus and TI-84 Plus

Posted on September 14, 2011 at 5:27 pm

Suppose you wanted to find the solutions to the following set of equations: Xavier and Yolanda both bake pies. In one hour, the pair create a total of 5 pies. If Xavier works for 3 hours and Yolanda works for …
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Filed under Algebra, Difficulty: Medium, TI-83 Plus, TI-84 Plus | Leave a comment

Matrices Made Easy: TI-83 and TI-84 Plus Edition

Posted on April 28, 2011 at 10:11 pm

Performing any type of mathematical operation such as addition or multiplication that involves matrices can be a daunting task, especially if you have to do all the steps without the aid of a calculator. Fortunately, your graphing calculator can solve …
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Filed under Algebra, Difficulty: Easy, TI-83 Plus, TI-84 Plus | Leave a comment

Settings on the TI-83 Plus and TI-84 Plus: The MODE Menu

Posted on March 27, 2011 at 11:10 pm

The TI-83 Plus and TI-84 Plus offer a variety of different settings for customizing calculations and the way graphs are displayed. While some of these options are more aesthetic, like setting the graph to be displayed in a split screen …
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Filed under Difficulty: Easy, TI-83 Plus, TI-84 Plus | 6 Comments

SAT Test Prep #3: Calculating Sale Prices, Percentages and Discounts

Posted on March 13, 2011 at 9:11 pm

One of the ways you can improve your SAT is score is identifying problems that may seem simple but are actually written to trick you. If you are rushing through a test, you may miss out on easy points. Consider …
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Filed under Algebra, Difficulty: Easy, SAT, Test Prep, TI-83 Plus, TI-84 Plus, TI-89 | 1 Comment

Business and Finance Math #5: Calculating the Effective Annual Rate (EAR) on the TI-83 & TI-84 Plus

Posted on March 9, 2011 at 11:28 pm

While they are intended primarily for math and statistics work, the TI 83 Plus and TI 84 Plus also have a slew of built in financial functions similar to those available on advanced financial calculators. This tutorial describes how to …
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Filed under Difficulty: Easy, Finance, TI-83 Plus, TI-84 Plus | Leave a comment

How to Graph Equations on the TI-83 Plus and TI-84 Plus

Posted on February 28, 2011 at 12:54 am

Calcblog’s very first video walks you through all the powerful graphing features available on your TI-83 Plus and TI-84 Plus. Keep reading to learn how to graph functions, find values at specific points along an equation, and use some of …
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Filed under Difficulty: Easy, TI-83 Plus, TI-84 Plus | 2 Comments

How to Change the Batteries on Your TI-83 Plus, TI-84 Plus or TI-89

Posted on February 24, 2011 at 10:49 pm

At some point while using your graphing calculator, you will turn on your calculator and be greeted with one of the following messages: Unlike in many portable electronics, changing your calculator’s batteries does not simply mean swapping them out. In …
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Filed under Difficulty: Easy, TI-83 Plus, TI-84 Plus, TI-89, Voyage 200 | 22 Comments

Hypothesis Testing using the Z-Test on the TI-83 Plus, TI-84 Plus, TI-89, and Voyage 200

Posted on February 6, 2011 at 11:39 pm

The TI-83 Plus and TI-84 Plus are optimized for performing many tasks in statistics, and one of their most powerful features is the ability to perform a variety of tests of statistical significance. With the statistics package installed, the TI-89, …
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Filed under Difficulty: Medium, Statistics, TI-83 Plus, TI-84 Plus, TI-89, TI-92 Plus, Voyage 200 | 1 Comment

SAT Test Prep #1: Mean, Mode, and Median on the TI-83 Plus, TI-84 Plus, and TI-89

Posted on January 19, 2011 at 10:52 pm

The following is a sample SAT problem similar to many found on the actual exam: Nighttime Temperatures in Juneau, Alaska Mon Tue Wed Thu Fri Sat Sun 32 28 28 26 21 22 25 The table above shows the temperatures, …
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Filed under Difficulty: Easy, SAT, Statistics, Test Prep, TI-83 Plus, TI-84 Plus, TI-89 | 5 Comments

Calculating Derivatives on the TI-83 Plus, TI-84 Plus, TI-89, TI-92 Plus, and Voyage 200

Posted on January 13, 2011 at 12:42 pm

Derivatives are perhaps the most elementary topic in calculus and show up in practically every discipline, from the natural and social sciences to economics and finance. This tutorial discusses the mathematical background of derivatives and demonstrates how to evaluate derivatives …
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Filed under Calculus, Difficulty: Easy, TI-83 Plus, TI-84 Plus, TI-89, TI-92 Plus, Voyage 200 | 1 Comment