?超一流数学高手、数学高手请进(016)

这题确实不用洛必达法则，可以用三角变换和等价无穷小解决…… lim(1+sinx-cosx)/(1+sinpx-cospx) =lim(2sin(x/2)*cos(x/2)+2(sin(x/2))^2)/(2sin(px/2)*cos(px/2)+2(sin(px/2))^2) =lim2sin(x/2)*(sin(x/2)+cos(x/2))/(2sin(px/2)*(sin(px/