" 4."int_(0)^( pi)x sin xdx

int_(0)^( pi/2)x sin xdx

int_(0)^( pi/4)sin xdx

"int_(0)^( pi)x sin^(2)xdx

int_(0)^( pi)sin xdx

int_(0)^( pi)x sin^(3)xdx

int_(0)^( pi)x sin^(-1)xdx

int_(0)^( pi/4)sin^(4)xdx

If f:[0,pi]rarr R is continuous and int_(0)^( pi)f(x)sin xdx=int_(0)^( pi)f(x)cos xdx=0 then the number of roots of f(x) in (0,pi) is ...

valuate the following integrals: int_(0)^( pi)x sin^(2)xdx

Evaluate int_(0)^( pi)(sin xdx)/(4-sin^(2)x)=