(sinx+xcosx)(1+cosx)+x(sinx)sinx=sinx+xcosx+sinxcosx+xcosx^2+xsinx^2=(sinx+sinxcosx)+(xcosx+xcosx^2+xsinx^2)=sinx（1+cosx）+ x（1+cosx）施主,我看你骨骼清奇,器宇轩昂,且有慧根,乃是万中无一的武林奇才.潜...