设函数z=x^y,则dz=
问题描述:
设函数z=x^y,则dz=
答
z'x=e^xz'y=1dz=z'xdx+z'ydy=e^xdx+dy
答
z'x=e^x
z'y=1
dz=z'xdx+z'ydy
=e^xdx+dy
答