$\"\"$

The function is $\"\"$ and the interval is $\"\"$ .

Find the maximum value of fourth derivative of the function $\"\"$ in given region $\"\"$ .

Use the graphing utility to draw the fourth derivative of the function $\"\"$ .

Graph the fourth derivative of the function $\"\"$ .

$\"\"$

Observe the graph:

$\"\"$ is maximum point over the interval $\"\"$ .

$\"\"$

Maximum point is $\"\"$ .