Write an equation that represents the graph shown. The equation should be in simplest form ( b > 0 b>0 b > 0 and phase shift is not included).

y = 3 2 cos ⁡ ( 4 x ) y=\frac32\cos\left(4x\right) y = 2 3 cos ( 4 x )

y = 3 2 cos ⁡ x y=\frac32\cos x y = 2 3 cos x

y = 1 2 cos ⁡ ( 2 x ) y=\frac12\cos\left(2x\right) y = 2 1 cos ( 2 x )

y = 3 cos ⁡ ( 4 x ) y=3\cos\left(4x\right) y = 3 cos ( 4 x )

Write an equation that represents the graph shown. The equation s...

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