Hi, I need help with my homework. If possible, can you explain to me the solution step by step and mention the formulas that is being used so that i could have a better understanding.

Thank You

Let X and Y have joint density f(x, y). Let (R, O) be the polar coordinates of (X, Y). (a) Give a general expression for the joint density of R and O. (b) Suppose X and Y are independent with f(x) = 2x for 0