隐函数求导遇到问题

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巴卡木梨 2024-4-24

评论： Dyuman Joshi 2024-4-24

syms x y

F=atan(y/x)-log(sqrt(x^2+y^2))

F =

Fxx=diff(F,x,2)

Fxx =

Fyy=diff(F,y,2)

Fyy =

Fxy=diff(diff(F,x),y)

Fxy =

Fx=diff(F,x)

Fx =

Fy=diff(F,y)

Fy =

dydx=-diff(F,x)/diff(F,y)

dydx =

d2ydx2=-(Fxx*Fy^2+Fyy*Fx^2-2*Fxy*Fx*Fy)/(Fy^3)

d2ydx2 =

Dyuman Joshi 2024-4-24

What exactly is the problem?

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