Cracking The Ap Calculus ab Exam 2018

3.If f(x) = , then f′(x) is

(A) 1

(B)

(C)

(D)

4. =

(A) 1

(B) 0

(C)

(D)The  limit   does    not exist.

5.If y = sin(xy), find

(A)cos(xy)

(B)

(C)xcos(xy)

(D)