" Evaluate "int_(-(pi)/(2))^((pi)/(2))(cos x)/(1+e^(x))dx

Evaluate int_(-(pi)/(2))^((pi)/(2))(cos^3x)/(1+3^x)dx .

Evaluate: int_(-pi//2)^(pi//2)(x^2cosx)/(1+e^x)dx

int_(-pi//2)^(pi//2)(cosx)/(1-e^(x))dx=

The value of int_(-pi//2)^(pi//2) (x^(2)cos x )/(1+e^(x)) dx is equal to

Evaluate: int_(-pi)^( pi)((2x)(1+sin x)/(1+cos^(2)x))dx

Evaluate: int_(-pi/2)^( pi/2)(x sin x)/(e^(x)+1)dx

Evaluate: int_(-(3 pi)/(2))^(-(pi)/(2))[(x+pi)^(3)+cos^(2)(x+3 pi)]dx

int_(-(pi)/(2))^((pi)/(2))(e^(|sin x|)cos x)/(1+e^(tan x))dx is equal to (a) e+1 (b) 1-(pi)/(2)e(c)e-1(d) none of these

Evaluate int_(-pi/2)^(pi/2)(sin2x)/(1+cos^3x)dx