part 3 - autodiff HW 1 - Background review Suppose we want to minimize the following function with respect to z (we don't care about ) f(z, x)= log(cos(z) + z + x) 1. Break f(x, x) down into a sequence of primitive operations (like we did in class) and write this sequence of primitives below. 2. Derive of of using the chain rule ("backprop") using your primitives. Compute given z = 1 and x = 1.