Question: 12. Let the trigonometric function f be defined as f(x) = 3 cos(2x). a) Find the amplitude and the period of f. b) Sketch

12. Let the trigonometric function f be defined as f(x) = 3 cos(2x). a) Find the amplitude and the period of f. b) Sketch one period of the graph of f on the grid provided below.

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