x^2-xy-y^2=1 怎么求导
问题描述:
x^2-xy-y^2=1 怎么求导
答
两边对x求导得
2x-y-xy'-2yy'=0
y'=(2x-y)/(x+2y)
x^2-xy-y^2=1 怎么求导
两边对x求导得
2x-y-xy'-2yy'=0
y'=(2x-y)/(x+2y)