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

[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.

 

[ranger]

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).

 

[quicknote]

I understand the frustration of encountering errors while working on a project. In this case, the "Not an Algebraic Expression" error on your TI 89 graphing calculator can be fixed by following a few steps.

Firstly, make sure that you have entered the expression correctly. It seems like there may be a typo in your expression as it is not clear what the "o" represents. Double-check the parentheses and make sure they are in the correct order.

If the expression is entered correctly and the error persists, try using the "Simplify" function on your calculator. This will help to simplify your expression and make it easier for the calculator to interpret.

If the error still persists, try using the "Factor" function to factorize the expression. This can also help in simplifying the expression and making it easier for the calculator to graph.

If none of these solutions work, it is possible that your calculator may need to be updated or reset. You can consult the user manual or reach out to the manufacturer for assistance with this.

Alternatively, you mentioned that the expression worked on a TI 84 calculator. You can try using the same expression on the TI 84 and then transferring the solution to your TI 89 calculator.

I hope these suggestions help you to fix the error and successfully complete your project. Remember to always double-check your expressions and use the available functions on your calculator to simplify and factorize them. Good luck!