Question
Question: \(\int _ { 0 } ^ { 1 } \frac { e ^ { x } ( x - 1 ) } { ( x + 1 ) ^ { 3 } } d x =\)...
∫01(x+1)3ex(x−1)dx=
A
4e
B
4e−1
C
4e+1
D
None of these
Answer
4e−1
Explanation
Solution
∫01(x+1)3ex(x−1)dx=∫01(x+1)3ex(x+1−2)dx
∫01(x+1)2exdx−2∫01(x+1)3exdx=[(x+1)2ex]01=4e−1 .