If lim x 3/() - 7, which of the following must be true? (1) f is continuous at x = 3 (11) f is differentiable at x = 3 (111) f(3) = 7 1, II, and Ill O II only O III only None Question 7 12.5 Which of the following functions shows that the statement "If a function is continuous at x = 0 , then it is differentiable at> 0 " is false? Of (x) = 23 Of ( z ) = 23 Of ( 2 ) = 2 3 Of ( 1 ) = 23