help? integrals?

Question

Answer 1

(3)

Step 1 :

The integration function is .

Find the value of integration function .

Property of integration : .

Substitute in the above integration function.

.

Solution :

.

Answer 2

(4)

Step 1 :

The integration functions are and .

Find the value of the integration function .

Sum / difference rule of integration : .

Property of integration : .

Substitute and in the above integration function.

.

Solution :

.