The limit lim (3 + h) - 243 h represents the derivative of a function f at a number c. h-0 Determine f and c. a) Of ( x) = x , c = 3 b) Of (x) = (3+ x), c= 3 c) CAf (x) = x, C= 243 d) Of (x) = (3+x), c=-3 e) Of (x) = (3- x)5, c= 243