KCET2013MathematicsIndefinite Integration
(x-1) e^ x (x+1)³ d x is equal to
Options
- Ae^ x x+1 +C
- Be^ x (x+1)² +C
- Ce^ x (x+1)³ +C
- Dx e^ x (x+1) +C
Correct answer
B. e^ x (x+1)² +C
Step-by-step solution
Let I= x-1 (x+1)³ e^ x d x= (x+1)-2 (x+1)³ e^ x d x= e^ x (x+1)² d x-2 e^ x (x+1)³ d x= 1 (x+1)² e^ x - -2 (1+x)³ e^ x d x-2 e^ x (x+1)³ d x= e^ x (x+1)² +C