How to Find an Antiderivative on a TI-84 Calculator

If you are taking a calculus exam, you might be wondering how to calculate an antiderivative in your calculator. While the TI-84 Plus is a powerful tool, it has very specific limitations when it comes to algebra and integration.

The Limitations of the TI-84

The standard TI-84 Plus does not include a Computer Algebra System (CAS). This means it cannot give you a symbolic answer with variables (like x^3 + C). It can only evaluate definite integrals to give you a final numerical area under a curve.

Evaluating Definite Integrals on the TI-84

To evaluate a definite integral numerically:

1. Press the MATH button.
2. Select 9: fnInt(.
3. Enter your lower bound, upper bound, function, and variable of integration.
4. Press ENTER to get your numerical area.

How to Get Symbolic Answers

Because you cannot find an indefinite antiderivative on a standard TI-84, you need a different tool when doing homework. For symbolic algebra and rule breakdowns, use our free online Antiderivative Calculator to get the exact equation with step-by-step instructions.