Question

The value of definite integral $\int\limits_{-a}^a \frac{x^2 \cos x+e^x}{e^x+1} d x$ is equal to

• A. $2 a \cos (a)-a+\left(a^2-2\right) \sin (a)$
• B. $2 a \cos (a)+a+\left(a^2-2\right) \sin (a)$
• C. $2 a \cos (a)-a-\left(a^2-2\right) \sin (a)$
• D. $2 a \cos ( a )+ a +\left( a ^2+2\right) \sin ( a )$

Answer 1

Answer: (B)

Correct answer is (b) $2 a \cos (a)+a+\left(a^2-2\right) \sin (a)$