have a question about a chain rule problem thats got me stuck:
let f be a real valued differentiable function. Show that
how do i use the chain rule without knowing what x and y are? or am I supposed to use other varaibles such as s=x^s and t = y^2 ?
let f be a real valued differentiable function. Show that
Code:
z = f (x^2+y^2) + xy satisfies y(dz/dx)-x(dz/dy) = y^2 - x ^2
how do i use the chain rule without knowing what x and y are? or am I supposed to use other varaibles such as s=x^s and t = y^2 ?