Cracking The Ap Calculus ab Exam 2018

(Marvins-Underground-K-12) #1
(C)

(D)

17.If f(x) = ln(cos(3x)), then f′(x) =


(A)3    sec(3x)
(B)3 tan(3x)
(C)−3 tan(3x)
(D)−3 cot(3x)

18.If f(x) = dt, then f′(−4) =


(A)−2

(B) 2

(C)

(D) 0
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