A function is represented by y = cos (2π/5)x - 1. Determine the amplitude and period of the function. What is the equation of the midline?A) amplitude is 1; period is 5; y = 0 B) amplitude is 1; period is 2/5; y = 1 C) amplitude is 1; period is 5; y = −1 D) amplitude is 1; period is 2π; y = −1 (Please explain how you get it)
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