Seudónimo Seudónimo
  • 04-07-2020
  • Mathematics
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I NEED HELP PLEASE! THANKS :)

I NEED HELP PLEASE THANKS class=

Respuesta :

TheAnimeGirl
TheAnimeGirl TheAnimeGirl
  • 04-07-2020

Answer:

[tex]y = 2 \: cos \: (\frac{1}{3} x)[/tex]

option C is the right option.

Explanation:

General expression of a cosine function is:

y=A cos k X

where A is amplitude and 2 pi/k is its period.

In our case,

[tex] - y = 2 \: cos \: (\frac{1}{3} x) \:[/tex]

has :

[tex]amplitude = 2 \\ period = 2\pi \times 3 = 6\pi[/tex]

hence, the right answer is of option C

hope this helps...

Good luck on your assignment..

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