5.2 Compute the derivative f'(x) of the logistic sigmoid f (ac) = 1 + exp(-x)5.7 Compute the derivatives d f /da: of the following functions by using the chain rule. Provide the dimensions of every single partial derivative. Describe your steps in detail. a. f{z]=log(l+z), z=me, me 1RD z) =siniz), z= Am+b. A e REXD,9:E 139,136 IRE where sin(-} is applied to every element of z