# calc plzzzz help

posted by
**Naina** on
.

This limit represents the derivative of some function f at some number a. Select an appropriate f and a.

lim_(h->0) (root4(256+h)-4)/h

1

f(x) = x^4, a = 4

f(x) = x^1/4, a = 4

f(x) = x^1/4, a = 256

f(x) = √x, a = 256

f(x) = √x, a = 16