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find an equation of the graph.

1 Answer

Step 1:

Observe the graph, it is a cosine function graph.

General form of cosine function .

The maximum value is occurs at .

Amplitude of the graph is .

Period is .

Period of the graph is 8.

Substituteh values of in .

Solution:

.

answered Jan 26, 2015 by david Expert
edited Jan 26, 2015 by david

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