The function is on interval
.
Consider .
Apply derivative on each side with respect to .
.
Product rule of derivatives : .
.
Find the critical numbers of on the interval
by equating
.
or
or
.
The function has local minimum or maximum at and
.
Substitute in
.
.
Substitute in
.
.
Find the values of the function at the end points of the interval .
Substitute in
.
Substitute in
.
Compare the values of the function at critical points and end points of the function.
\The function has absolute maximum is .
The function has absolute minimum is .
The function has absolute maximum is .
The function has absolute minimum is .