e^z - xyz = 0 e^z(∂z/∂x) = yz + xy(∂z/∂x)令z' = ∂z/∂x = yz/(e^z - xy) = yz/(xyz - xy) = z/(xz-x) = [z/(z-1)](1/x)∂²z/∂x²= dz'/dx = (1/x)[z'(z-1)-zz']/(z-1...
e^z - xyz = 0 e^z(∂z/∂x) = yz + xy(∂z/∂x)令z' = ∂z/∂x = yz/(e^z - xy) = yz/(xyz - xy) = z/(xz-x) = [z/(z-1)](1/x)∂²z/∂x²= dz'/dx = (1/x)[z'(z-1)-zz']/(z-1...