20 Most Recent Texas Instruments TI89 Titanium Scientific Calculator Questions & Answers

There is no problem to resolve this question. See captured image below

Reset your TI-89Press left and right arrow and 2nd keys simultaneosly, hold it and then press ON. Release all keys and you will reset TI 89

That's because there's an infinite number of solutions to your equation. Replacing the @n with any integer gives you a new, different solution.

Try to reset it by taking out the batteries and leaving to sit for a minute or so, if that doesn't work take out the small battery as well and leave it sit, if you're still stuck you can call ti-cares (800-842-2737) they're generally very helpful.

I have the exact same problem (just happended recently) with my TI-5045 II after 25 years of good service. My solution? I just bought another model: Sharp EL-1801V at Stapels for about $31.00. To get the old one fixed will probably cost me $25.00-30.00 just to diagnose, plus shipping and parts and labor. And that assumes I can find a shop to do it, or that TI still stocks the part(s) gone bad. Same old problem with all technology.