Are you getting an “argument error” on a Ti-89 Titanium? Well, please try executing the “Clear A-Z” command under the “Clean Up” menu (F6) as this will correct the issue.
Note: You can find special characters like “?” under the “CHAR” menu, which is [2nd]+[PLUS] on the TI-89T.
The third submenu, “Punctuation”, has a question mark as the 8th entry.
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About The Author:
Stephan Pringle is an Information Technology Support Specialist. He covers hardware
and provides tips for you to troubleshoot and repair issues on your own. In his spare time, he writes articles about the State of New York
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