The function is $\"\"$ .

Graph the function $\"\"$ .

$\"\"$

Observe the graph of $\"\"$ , it appears that the function has no relative extrema.

Observe the end behavior of the graph, the function has absolute maximum in the interval $\"\"$ .

Locate the absolute maximum.

$\"\"$

Observe the graph:

Absolute maximum of $\"\"$ is at $\"\"$ .

Absolute maximum is $\"\"$ .