(a)

The function $\"\"$ .

Derivative of a function $\"\"$ is defined as $\"\"$ .

$\"\"$ .

The derivative of the given function.

$\"\"$

Binomial expansion : $\"\"$ . $\"\"$

$\"\"$

(b)

Graph:

Graph the functions $\"\"$ and $\"\"$ .

$\"\"$

Observe the graph,

Obtained derivative function is same as the graph of derivative function found using graphing utility.

(a) $\"\"$ .