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Sketch a graph of the function f(x) = - 2cos(1/4 * x)

Sketch A Graph Of The Function Fx 2cos14 X class=

Answer :

The period of the graph is now:

[tex]\begin{gathered} period\text{ = }\frac{2\pi}{\frac{1}{4}} \\ \text{ = 8}\pi \end{gathered}[/tex]

The sine graph is also flipped because a = -2 is negative.

The amplitude of the graph is 2.

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