u/Abhlnav

So I have two values -1 and 1 stored in variables i and j.
When I run fMax(y1(x),x)|i<=x<=j the constraint doesn't actually work, BUT when i do fMax(y1(x),x)|-1<=x<=1 it does.

Any ideas? I was using that exact line within a program, and I need it to work. I could use derivatives and manually find the relative minimum/maximum but it would be inefficient.