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1. (4 MARKS) Let a, be real numbers. Find the limit: lim 21 + b T+-DO 1/4x2 - oz + 3 (a) 0 (b) -1 (c) 1 (d) 2 (e) None of these b C e 2. (4 MARKS) For what value of the real number c is the function f(r) continuous? f(x) = D'tEtc if I 2. (a) 0 (b) -3 (c) v2/2 (d) -5 (e) None of these b C d 3. (4 MARKS) Let f(x) = In2 + sin 2r. Find f'(x). (a) $ + cos2x (b) 5 - cos2x (c) cos2x (d) 2 cos2r (e) None of these b C d e 4. (4 MARKS) Let f(-5) = 0, f'(-5) = -10, g(-5) = 1 and g'(-5) = -. Find h'(-5) if h(x) = (a) -10 (b) 10 (c) -2 (d) 50 (e) None of these