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49. True or false: If the left-hand limit and right-hand limit of f(x) exist as a approaches a, then lim f(x) = f(a). False 50. True or false: If f(a) = 0, then the left-hand limit and the right-hand limit are equal as x approaches a. False x - a 51. Suppose g(x) = 12 _ 2) where a > 0. (a) Evaluate lim g(x). zo (b) Evaluate lim 3x . g(x)]. 3 I-+00