z=y×sin(x/y)的偏导数
问题描述:
z=y×sin(x/y)的偏导数
求偏导数
答
Zx=y*cos(x/y) * (1/y)=cos(x/y) Zy=sin(x/y)+y*cos(x/y)*(-x/y^2)=sin(x/y)-x*cos(x/y) /y
z=y×sin(x/y)的偏导数
求偏导数
Zx=y*cos(x/y) * (1/y)=cos(x/y) Zy=sin(x/y)+y*cos(x/y)*(-x/y^2)=sin(x/y)-x*cos(x/y) /y