How to Enter Logarithms on Your Graphing Calculator

Most graphing and scientific calculators have the ability to calculate logarithms, but you might come across questions which require you to use a different base than your calculator’s built-in functions. Thankfully, there is a simple formula called the “change of …
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Filed under Difficulty: Easy, TI-83 Plus, TI-84 Plus, TI-89, TI-92 Plus | 4 Comments

How to Round Numbers on the TI-84 Plus and TI-89

Sometimes it’s useful to work in units with only a certain number of decimals. For example, if you’re doing money calculations, you probably don’t want to think about fractions of cents. If you want to change the number of decimals …
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Filed under Algebra, Difficulty: Easy, TI-83 Plus, TI-84 Plus, TI-89, TI-92 Plus | Leave a 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.

Filed under Algebra, Difficulty: Easy, TI-89, TI-92 Plus, Voyage 200 | Leave a comment

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 | 19 Comments

Quick Tip: How to Clear Variables on the TI-89, TI-92 Plus, and Voyage 200

Sometimes, it is useful to store specific values in the letter variables (a-z) on your device, especially if you will be using that specific value over and over again. For example, you can store the value of Planck’s constant on …
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Hypothesis Testing using the Z-Test on the TI-83 Plus, TI-84 Plus, TI-89, and Voyage 200

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

Evaluating Limits on the TI-89, TI-92 Plus, and Voyage 200

The limit of a function is a fundamental calculus concept which is used in characterizing functions, calculating derivatives, and more. This tutorial discusses the theory of limits and how to evaluate limits, including left and right-handed limits, on your TI-89, …
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Filed under Calculus, Difficulty: Easy, TI-89, TI-92 Plus, Voyage 200 | Leave a comment

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

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

Performing a Linear Regression on the TI-89, TI-92+, and Voyage 200

Unlike with the TI-83+ and TI-84+, it is relatively hard to perform statistics operations on the TI-89, TI-92+, and Voyage 200 the first time around. This tutorial demonstrates using the statistics functions available on this series of calculators to perform …
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Filed under Difficulty: Hard, Statistics, TI-89, TI-92 Plus, Voyage 200 | Leave a comment

Evaluating Integrals on your TI-89, TI-92+, or Voyage 200

This tutorial demonstrates how to evaluate integrals using the TI-89, TI-92+, or Voyage 200 graphing calculators. Symbolic integration is one of the most powerful features of the TI-89 and makes it an extremely useful calculator for calculus.

Filed under Calculus, Difficulty: Easy, TI-89, TI-92 Plus, Voyage 200 | Leave a comment