x->0sinx ~ xlim(x->0) (∫(0->x^2) sint dt)/ [x(sinx)^3] =lim(x->0) (∫(0->x^2) sint dt)/ x^4 (0/0)=lim(x->0)2xsin(x^2)/ (4x^3)=lim(x->0)2x^3/ (4x^3) =1/2
