∫ [(Inx)^2-x^2sinx]/x dx
= ∫ (lnx)^2dlnx - ∫ xsinx dx
= (lnx)^3/3 + ∫ xdcosx
=(lnx)^3/3 + xcosx - ∫ cosxdx
=(lnx)^3/3 + xcosx - sinx + C