设函数y=cosx＋1,则dy=

设y=1+cosx / 1-cosx,求dy / dx 设y=sinx+cosx,则dy=多少 设y=(1-x)³cosx,求dy/dx 设y=cosx+1n平方x,求dy. 设函数y=(x^5-e^4x)/cosx,求dy 设函数y=x^2(cosx+根号下x),求微分dy 设函数y=xe^y,则dy/dx=? 设y=f(cosx),dy/dx= 设y=㏑(sinx/cosx)求dy 设y=cosx+xe^y,则x=0时,dy/dx=? 设函数y=x^x,则dy= 设函数y=3^1/X,dy/dx=()