HP50g ABS value Graph

[Neve]

(08-12-2021 05:36 AM)rawi Wrote:  You wrote:
f(x)=lx2-1l
Do you mean x*2 or is x2 a variable?
I put in in the equation writer:
Abs(x-1) and it worked perfect.
Abs(x*2-1) works as well.
Abs(x2-1) has no effect at all.

I mean f(x)=absolute value of x square -1

What result do you get? What I get is just the result of x square - 1, the absolute value is not taken into account.