Operation Manual

Hoofdstuk 1: Bediening van de TI-84 Plus Silver Edition 39
Error Conditions
Diagnosing an Error
The TI-84 Plus detects errors while performing these tasks.
• Evaluating an expression
• Executing an instruction
• Plotting a graph
• Storing a value
When the TI-84 Plus detects an error, it returns an error message as a menu title, such as
ERR:SYNTAX or ERR:DOMAIN. Appendix B describes each error type and possible reasons for the
error.
• If you select
1:Quit (or press y 5 or ‘), then the home screen is displayed.
• If you select
2:Goto, then the previous screen is displayed with the cursor at or near the error
location.
Note: If a syntax error occurs in the contents of a Y= function during program execution, then the
Goto option returns to the Y= editor, not to the program.
Correcting an Error
To correct an error, follow these steps.
1. Note the error type (ERR:error type).
2. Select 2:Goto, if it is available. The previous screen is displayed with the cursor at or near the
error location.
3. Determine the error. If you cannot recognize the error, refer to Appendix B.
4. Correct the expression.