`int_0^(pi/2) sin x sin 2x dx`

int_0^(pi/2) sin x dx

int_0^(pi/2) e^(sinx).sin 2x dx =

The value of the definite integral int_(0)^(pi//2)sin x sin 2x sin 3x dx is equal to

The value of the definite integral int_(0)^(pi//2)sin x sin 2x sin 3x dx is equal to

The value of the definite integral int_(0)^(pi//2)sin x sin 2x sin 3x dx is equal to

If I_(1)=int_(0)^(pi//2)f(sin2x)sin x dx and I_(2)=int_(0)^(pi//4)f(cos2x)cosx dx , then I_(1)//I_(2) is equal to

If I_(1)=int_(0)^(pi//2)f(sin2x)sin x dx and I_(2)=int_(0)^(pi//4)f(cos2x)cosx dx , then I_(1)//I_(2) is equal to

int_0^(pi//2) cos x e^(sin x) dx is :

int_0^(pi/2) sin^(2)x dx =