The function is and the interval is
.
Absolute maxima or minima exist either at the end points or at the critical numbers.
\Find the critical numbers :
\The function is .
Differentiate on each side with respect to
.
Apply quotient rule of derivatives : .
.
.
is undefined when denominator is zero.
Find the values where the denominator is zero.
\Since is not in the interval
, the function
is undefined at
.
Equate to zero.
Since is not in the interval
, the solution is
.
The critical numbers are and
.
The end points are and
.
Find the value of at the critical numbers.
Substitute in
.
Find the value of at the end points of the interval.
Substitute in
.
Substitute in
.
Since the largest value is , absolute maximum is
.
Since the smallest value is , absolute minimum is
.
\
Absolute maximum is .
Absolute minimum is .