Sole Cads or Not To CAS

[tim_crouse]

Jonmore

I see you used CAS Solve. But why did you enter 2*x and not just 2x as it is in CAS mode?

Some of this seems a bit buggy to me:

I entered the same formula into a Casio FX50, TI-92 and both came back with -1.

Per the tutorial, I am following on Udemy the answer is shown to be -1.

Thank You for your replies.

Thanks Again
-Tim C.