(a)

Step 1 :

.

Consider .

Differentiate with respect to .

Step 2 :

Substiute  and in .

Use integration Formula : .

+c

Substitute in the above expression.

+c.

+c.

Solution :

+c.

(b)

(a)

Step 1 :

.

Consider .

Differentiate with respect to .

Step 2 :

Substiute  and in .

Use integration Formula : .

+c

Substitute in the above expression.

+c.

+c.

Solution :

+c.

(b)

Step 1:

.

Use sum rule of integration : .

Step 2 :

Consider .

Differentiate with respect to .

.

Use power rule of derivative : .

Substitute and   in .

Use integration Formula : .

Substitute .

.

Step 3 :

.

Consider .

Differentiate  .

Use power rule of derivative : .

Substitute and .

Use power rule of integration : .

Substitute .

.

 .

Step 4 :

Substitute the results of  and in

.

.

Solution :

.