(4) Suppose that lim f(x) = 0 but f(x) > 0. Then, x (A) lim f(x) = (B) lim f(x) (C) lim 1 1 f(x) = = (D) lim f(x) <0. = 0 (5) The function f(x) assumes only two values: 5 and 7. No matter how big N is, there is some x > N such that f(x) = 5 and there is some x > N such that f(x) = 7. We conclude that (A) limo f(x) = 5 (B) lim f(x) = 7 (C) limx- f(x) = 6 -xx (D) lim f(x) does not exist. (6) Let f(x) = 2. In order to ensure that f(x) > N, it is enough to require that (A) x > N (B) x < N (C) x < (D) |x| < N (7) Which of the statements is true? (A) limt sint = 1 (B) limt sin t = T (C) limt sin t = (D) lim sint does not exist.