1-30 Evaluate the integrals by making appropriate u-substitution.
Let
then (1) be comes
Integrating w.r.t , we get
2.
then (1) becomes
From (2) Substituting into (3), we get
3.
Let
then (1) becomes
4.
Let
then (1) becomes
Substituting into (3)
5 .
then (1) becomes
Substituting into (3) we get
6.
then (1) becomes
7.
Let
then (1) becomes
Substitinting into (3), we get
8.
Let
then (1) becomes
integrating w.r.t
Substituting into (3)
9.
Let
then (1) becomes
10.
Let
then (1) becomes