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

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

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

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

Factoring Polynomials on the TI-89 and Voyage 200

The TI-89, TI-92 Plus, and Voyage 200 offer two built-in functions for easily factoring expressions and trinomials/polynomials into their component parts. This tutorial explains when to use these functions and how to use them to solve simple equations and polynomials.

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SAT Test Prep #2: Power Rules of Exponents

While you will be able to use a graphing calculator on the SAT, sometimes it is faster to have mathematical rules memorized beforehand so you can quickly solve problems without trying to find the answer by trial and error with …
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How to Create a Simple Quadratic Formula Program on the TI-89 and Voyage 200

Like the TI-83 Plus and TI-84 Plus, the TI-89, TI-92 Plus, and Voyage 200 graphing calculators all have their own integrated programming language, TI-BASIC. While this language is somewhat more complex on the TI-89/V200 series than the the TI-83 Plus …
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Filed under Algebra, Calculator Program, Difficulty: Medium, TI-89, TI-92 Plus, Voyage 200 | 20 Comments

Three Applications to Turn Your TI-83+ or TI-84+ into a TI-89

The TI-89 series of calculators is packed with features that, unfortunately, are lacking in the TI-83+ and TI-84+. This tutorial will show you how to install and use three applications to add 3D graphing, symbolic differentiation, simplifying equations, and pretty-print …
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Filed under Algebra, Calculus, Difficulty: Medium, TI-83 Plus, TI-84 Plus | 18 Comments

Creating a Simple Quadratic Formula Program on Your TI-83 Plus or TI-84 Plus

One of the most useful features of the TI-83 Plus/TI-84 Plus series of calculators is their integrated programming language, TI-BASIC. Unfortunately, not much documentation exists online on how to create programs using this feature. This tutorial provides an introduction on …
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Filed under Algebra, Calculator Program, Difficulty: Medium, TI-83 Plus, TI-84 Plus | 6 Comments