`int_(0)^(pi//4) (dx)/(1+x^(2))`

int_(0)^(pi//4)(dx)/((1+cos2x))

int_(0)^( pi/2)(x)/((1-x^(2)))dx

int_(0)^(pi//4) (1)/(1+cos 2x)dx

Statement-1: int_(0)^(pi//2) (1)/(1+tan^(3)x)dx=(pi)/(4) Statement-2: int_(0)^(a) f(x)dx=int_(0)^(a) f(a+x)dx

int_(0)^( pi/8)(1)/(1+4x^(2))dx=?

int_(0)^( pi/4)(1)/(cos^(2)x)dx

" 0."int_(0)^( pi/4)(dx)/(2+sin^(2)x)=

The value of int_(0)^( pi/2)(dx)/(1+tan^(3)x)(i)0(ii)1(iii(pi)/(2) (iv) (pi)/(4)

If l=int_(0)^(pi//2)(cosx)/(1+sin^(2)x)dx , then (4)/(pi)l is _______.