Question
Asked Oct 22, 2019
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State amplitude,reflection,period,vertical translation and phase shift for each function and graph.

y=-1+2cos(4x+pi)

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Expert Answer

Step 1

Note that, the general form is

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у%3D Аcos( Bx —С) + D. 2л 1. The amplitude A 2 maximum minimum|, 2. The period.P= 3 B The phase shift, D is vertical shift. В

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Step 2

The given function is

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y 2 cos(4x +-1

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Step 3

...
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2л P = 41 = 4 Obtain the phase shift as follows: C -T В 4 The amplitude is 2, the vertical shift is -1 and the reflation about y axis

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