设函数z=x^y,则dz=

问题描述:

设函数z=x^y,则dz=

z'x=e^xz'y=1dz=z'xdx+z'ydy=e^xdx+dy

z'x=e^x
z'y=1
dz=z'xdx+z'ydy
=e^xdx+dy