Recent content by mothis

Ya, I've tried removing the back-up battery as well. The screen turns off, but when I re-install the batteries, the calculator resumes in its frozen state. To be clear, the screen does change in response to some inputs. For example, when I try the [left] + [right] + [2nd] + [on] solution, it...

This might be a bit more on the math side of things, but there's a pretty nice little cheat sheet of LaTeX symbols out there.

There are probably some windows only app.s that you will have to run in engineering (e.g. CAD programs). My guess is that you will have access to these 24/7 on computers in school labs, and that this is probably where you'll be expected to do most of your work. However, it would probably also...

Hi all, After about 15 weeks of no use (set theory course this term), my TI-89 is now completely unresponsive to any input. I have tried removing the batteries, holding down [left] + [right] + [2nd] + [on], and [-] + [)] while reinstalling one battery as indicated in the owner's manual. I...