Please do fast

Problem 1. Create a computational graph for the following expression: f=f|fx.,v.3) = say + a?- +2: Calculate the forward values of all the nodes and function f starting with I = 2. y = 2, z = 4. In the process of calculating every node and every intermediate value? record all partial derivatives of every intermediate value with respect to its inputs. Finally, determine tlte derivatives of f with respect to a. y? and 2. Please. present your results as a simple graph. You can draw your graph by any means you nd convenient. including by hand. Please place forward values above the lines representing propagation of values and backpropagation values (derivatives) below the lines. List clearly the nal values of partial derivatives of function f{I. y, a] with respect to a. y. and a. Do all calculation with pan and paper. (20%]