(e)

Step 1:

The integral is .

Consider .

Substitute and in the integral.

Repalce in the above expression.

.

Solution :

.

(e)

Step 1:

The integral is .

Consider .

Substitute and in the integral.

Repalce in the above expression.

.

Solution :

.

(f)

Step 1:

The integral is .

Consider .

Substitute and in the integral.

Repalce in the above expression.

.

Solution :

.