need help with part b. the given limit is in part a

OX final xplicit permission from its author(s). Illegal to reproduce or share this assignment (or any question from it) . No late assignments accepted. 1. (12 points) (a) (8 points) Evaluate the limit lim - 2th + h +0 h h = IIM 26 - 4 h-70 lim - 2 th v /2 1 1m 26 - 4 lim (b) (4 points) The limit above can be interpreted as f'(c), the derivative of a function evaluated at some point r = c. Identify a point x = c and a function f(x) that matches this interpretation. L =