Question about Texas Instruments TI-81 Calculator
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Posted on Jan 02, 2017
In addition to k24674's explanation, you can convert from a symbolic answer to a numeric answer by pressing Diamond then Enter.
Posted on Jan 18, 2010
SOURCE: My TI-81 has completely stopped
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 do it, please append a comment to this post and we'll go on from there.
Posted on Sep 07, 2010
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