求 xy=e^(x+y)导数

2024-11-21 02:33:47
推荐回答(3个)
回答1:

xy=e^(x+y) 两边对x求导得
y+xy'=e^(x+y)(1+y')
[x-e^(x+y)]y'=e^(x+y)-y
y'=[e^(x+y)-y]/[x-e^(x+y)]

回答2:

xy=e^(x+y) 两边对x求导得
y+xy'=e^(x+y)(1+y')
[x-e^(x+y)]y'=e^(x+y)-y
y'=[e^(x+y)-y]/[x-e^(x+y)]
后续y`=(xy-y)/(x-xy)=[y(x-1)/x(1-y)]

回答3:

等式两边同时对x进行求导。
y+xy'=(1+y')×e^(x+y)
[x-e^(x+y)]y'=y+e^(x+y)
y'=[y+e^(x+y)]/[x-e^(x+y)]