Barrons AP Calculus - David Bock

18. The period of f (x) = is

(A)

(B)

(C)

(D) 3

(E) 6

19. The range of y = f (x) = ln (cos x) is
    (A) {y | − ∞ < y 0}
    (B) {y | 0 < y 1}
    (C) {y | −1 < y < 1}
    (D)
    (E) {y | 0 y 1}


20. If then b =

(A)

(B)

(C)

(D) 3

(E) 9

21. Let f −1 be the inverse function of f (x) = x^3 + 2. Then f −1(x) =
    (A)
    (B) (x + 2)^3
    (C) (x − 2)^3
    (D)
    (E)


22. The set of x-intercepts of the graph of f (x) = x^3 − 2x^2 − x + 2 is
    (A) {1}
    (B) {−1,1}
    (C) {1,2}