21 3
2
1 1
dx
+x
∫
 equals
(A)
π3
(B)
π32
(C)
π6
(D) 12
π
22 2
3
2
0 4
9
dx
x
+
∫
 equals
(A) 6
π
(B) 12
π
(C) 24
π
(D) 4
π
7 9  Evaluation of Definite Integrals by Substitution
In the previous sections, we have discussed several methods for finding the indefinite
integral