Derivative is
The original function is
The answer says the critical points are 0 and -4/5.
The points appear to be 0, and -2.
What did I do wrong?
Use analytic methods to find the extreme values of the function on the interval and where they occur.
Extreme values includes local and absolute max and min.
Analytic methods meaning I can't graph anything.
To find the critical points i need to find when y'= 0.
I got the points
When plugged into g(x) they yield 1 and -1, respectively.
These are only 2 critical points; I need 4.
Thanks for the help!