TI-89 Error codes pop up for one of two reasons:įeel like 'cheating' at Calculus? Check out our Practically Cheating Calculus Handbook, which gives you hundreds of easy-to-follow answers in a convenient e-book.Tuning up your computer is a responsibility that, even though it needs to be assumed in the long term, does not necessarily have to be an annoyance, what with the market offering programs that can automate the task. You’ve made a typo, or forgot to include something (like a closing parentheses).Something stored (like a variable) is preventing the calculator from performing the requested action.If your problem is not being able to graph correctly (or at all), this is usually due to a setting in the Y=editor.

In the Y=editor, look for check marks to the left. Those indicate which functions should be graphed. If you need to add (or remove) check marks, scroll to the space on the left of the “y=”, then press F4 to select/deselect.

The following list is short, but contains the most common error codes you’re likely to come across in calculus when working with the TI 89. If your TI 89 has frozen (usually accompanied by the “Address error” code), you must perform a memory reset to restore operations. To reset the memory (this is essentially a factory reset- you’ll lose your data): It’s usually caused by installing a non-compatible third-party program. Select 2 (Default) by using the arrow keys.This is usually caused by not stating the correct number (from the Y=editor) for the function. Also, if you’re on the home screen, make sure you’re using output function notation. This is one of those codes that may have several causes. If you’re getting Error: Dimension, the variable you are using, e.g.

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