Answered

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I really need help please

I Really Need Help Please class=

Sagot :

Answer:

Step-by-step explanation:

Start with cosine function

cos (x)

change amplitude to '2'

2 cos (x)

there is no phase shift so it remains

2 cos(x)

push it down 1 unit from the usual midline of zero

2 cos (x) -1      

Lastly , it is compressed from usual period of 2 pi to 2pi/3

  2 pi / (2 pi/3)   = 3

2 cos ( 3x) -1      Done.

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