Calculators Ti 89 Graphing Help: Fixing "Not an Algebraic Expression" Error

Thread starter whitneysit
Start date Dec 17, 2009
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Graphing Ti-84

AI Thread Summary

The issue arises from inputting the expression -1x/(x<o)/(x>-1) into a calculator, which results in an error indicating it is not an algebraic expression. To resolve this, users are advised to clear any existing variables in the calculator. Additionally, experimenting with different variable names, such as y, z, t, or xy, may help in successfully processing the expression. The TI-84 calculator successfully handled the input, suggesting that the problem may be specific to the calculator being used.

Dec 17, 2009

whitneysit

So I have a project due tomorrow and I really need to use a caculator and Mine won't work right.

When insert
-1x/(x<o)/(x>-1)

It saids its not an algebraic expression how do I fix that.
I try it with an ti 84 and it worked.

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Dec 17, 2009

ranger

Gold Member

Have you tried clearing your variables? Maybe try something other that x, such as y, z, t, or even xy (which is not the same as x*y).

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