Problem

A cosine-like graph starts at maximum \(5\) when \(x~=~0\), has minimum \(-1\), and repeats every \(4~\text{units}\). Calculate its amplitude, midline, range, frequency, and quarter-period, and write a model.

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amplitude = 3; midline = y=2; range = [-1,5]; period = 4; frequency = 1/4 cycle per unit; quarter-period = 1; model = y=2+3cos(2πx)

amplitude = 2; midline = y=3; range = [-1,5]; period = 4; frequency = 1/4 cycle per unit; quarter-period = 1; model = y=3+2sin(πx/2)

amplitude = 6; midline = y=5; range = [-1,5]; period = 4; frequency = 1/4 cycle per unit; quarter-period = 1; model = y=5+6cos(πx/2)

amplitude = 3; midline = y=2; range = [-1,5]; period = 4; frequency = 1/4 cycle per unit; quarter-period = 1; model = y=2+3cos(πx/2)

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