MATH 16A QUIZ 2-
(1) Using limits, calculate the derivative of f(x) = 1/x2 at x = 3.
(2) Compute the derivative of f(x) = 1/(x+√x) (you do not need to use limits).
(3) Let f(x) be the function defined as follows:
Carefully justify that f(x) is differentiable at x = 1.