Cracking The Ap Calculus ab Exam 2018

(C)y    −       =   

(D)y    −       =   

13.If the function f(x) = is differentiable for all real values of x, then b =

(A)−

(B)

(C) 0

(D)−

14. The graph of y = x^4 + 8x^3 − 72x^2 + 4 is concave down for

(A)−6   <   x   <   2

(B)x    >   2

(C)x    <   −6

(D)−3   −3  <   x   <   −3  +   3

15.

(A)

(B) 0

(C) 1

(D)1n   2