Each limit represents the derivative of some function f at some number a . State such an f and a, in each case. x/9+h3 .1' a 13:30 h f(w)= ,a= $1110 1 b.1jm ()2 6)% E f(6) = C] (hint: type "theta" for the variable 6 .), a. = C] cos(1r + h) + 1 . l' c #30 h f(6) = C] (hint: type "theta" for the variable 9 .), a, = C] 5 64 d. lim 9" m>2 332 f(w)= ,a=[:]