Question

xsinx/1+cosx ;diffrentiate wrt x -

Answer 1

let y = xsinx / 1+ cosx
du / dx = (1+cosx . d (xsinx)/ dx - xsinx. d(1+cosx) /dx) /( 1+cosx)^2
= ((1+cosx)(xcosx+ sinx) - (x sinx)(- sinx))/(1+cosx)^2
solve it further....