Question: In Exercises (x) = 2 cos(4x + ) - 1. Which of the following is the period of ? (A) 4 (B) 3 (C)

In Exercises ∫(x) = 2 cos(4x + π ) - 1.

Which of the following is the period of ∫?

(A) 4π 

(B) 3π

(C) 2π 

(D) π 

(E) π/2

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