Hi i am trying to solve this question
$$f (x, y, z) =\dfrac{\sin z}{x^2+y^2}$$
where $$x (r, θ, h) = r \cos θ$$ $$y (r, θ, h) = r \sin θ$$ $$z (r, θ, h) = h$$
first part of the question was to express the function in the cylindrical coordinates which i did and the you had to find the partial derivatives i was able to do that but how do you calculate the partial derivatives using the chain rule ?