The function is .
Apply first derivative with respect to .
Find the relative extrema, by equating .
Hence, the critical value is .
Substitute in
.
The relative extrema point is .
Determine the relative extrema, using second derivative test.
\Apply second derivative with respect to .
Point | ![]() |
Sign of ![]() | \
|
Conclusion | Relative minimum |
The relative minimum at .
The relative minimum at .