Answer :

subtomex0

[tex]y = 3cos(x)[/tex]

Since we observe no vertical or horizontal shifts, we can say that:

[tex]y = acos(bx)[/tex]

Since the range of the function is multiplied by 3:

[tex] = > a = 3[/tex]

[tex]y = 3 \cos(bx) [/tex]

Since we observe a period of 2π for the function to repeat itself:

[tex]t = \frac{2\pi}{b} [/tex]

[tex]2\pi = \frac{2\pi}{b} [/tex]

[tex]b = \frac{2\pi}{2\pi} = 1[/tex]

[tex]y = 3cos(x)[/tex]

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