Step 1:

The integral is .

Consider .

Differentiate on each side with respect to .

Substitue and in the integral.

.

Power rule of integration: .

.

Replace in above expression.

.

Solution:

.

2)

The integral is .

Consider .

Differentiate on each side with respect to .

Substitue and in the integral.

.

Power rule of integration: .

Replace in above expression.

.

Solution:

.

3)

The integral is .

Consider .

Differentiate on each side with respect to .

Substitue and in the integral.

.

Integral formula: .

Replace in above expression.

.

Solution:

.

4)

The integral is .

Consider .

Differentiate on each side with respect to .

Substitue and in the integral.

.

Integral formula: .

Replace in above expression.

.

Solution:

.