Function \"\"

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Since the function is a cosine function, the period is from \"\"

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The solution if the above function is \"\"

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\"\"

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\"\"

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Graph the function

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Substitute values of x in the function

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         x

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          \"\"

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         \"\"

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         \"\"

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        \"\"        

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       \"\"

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         y

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            3

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           0

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         \"\"

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            0

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            3

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Graph of the function is 

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\"pro