KCET2022MathematicsDefinite Integration
₀^1 x e^x (2+x)^3 d x is equal to
Options
- A1 27 e- 1 8
- B1 27 e+ 1 8
- C1 9 e+ 1 4
- D1 9 e- 1 4
Correct answer
D. 1 9 e- 1 4
Step-by-step solution
Let Here, 1 (2+x)^2 =f(x) and -2 (2+x)^3 =f^ (x) We know, e^x [f(x)+f^ (x) ] d x=e^x f(x)+c l= [e^x 1 (2+x)^2 ]₀^1= e^x (2+1)^2 - e^0 (2+0)^2 = e 9 - 1 4