Step 1:

\

2. (a)

\

The integration is $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

2. (b)

\

The integration is $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

2. (c)

\

The integration is $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

Solution :

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$ .