I cannot turn off the Fix key on a TI-15 calculator. Help!

Not directly. The calculator does not have the trig functions built in. You could do it the same way people did it before pocket calculators, but you can't do it just be pushing one or two keys on this calculator.

Hi
its possible that the second key is it working
if this is the case this problem can be fixed Let me know if you want to fix the calc

[FIX] [0.001] rounds results to the nearest thousandth.
[FIX] [ . ] removes the fixed-decimal setting.
You must press [FIX] before a Place Value key each time you want to
change the number of places for rounding.

The TI-35X has two shift keys in the upper-left-hand corner of the keyboard, marked "2nd" and "3rd".

TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't fix it, please reply to this post and we can go on from there.

TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

The FIX indicator tells you the calculator is set to a fixed-decimal mode. To clear this mode, press FIX . (decimal point).

i would say use the normal key pad or send it in to T.I to fix.

Press FIX then . (decimal point).

How do I clear off fix (rounding) mode on the TI-10 and TI-15?

In order to clear Fix off the calculator just press the following keys
- First press the [Fix] key
- Next press the [.] decimal key