it does make sense ... the original function has no critical values. What does that tell you?
I am working a problem on mathlab. It looks straightforward until I apply the quadratic formula and I get a negative number under a square root, which isn't allowed.
Locate the critical points of the function
the derivative is
Critical points are when F'=0, so I apply the quadratic formula to find the CP's.
this will simply to
and
The negative number in the sqrt doesn't make sense.