z=uv,x=u+v,y=u-v,求z对x的偏导

z=uv,x=u+v,y=u-v,求z对x的偏导
2025-12-14 21:11:50
推荐回答(1个)
回答1:

x=u+v
y=u-v
u=(x+y)/2
v=(x-y)/2
z=uv=(x^2-y^2)/4
z对x的偏导=x/2