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Mathematics, 17.01.2020 15:31 imantahir1200345

Which of the following cosine functions has a period of 3 π ?
a. y = 3cosx
b. y = cos3x
c. y = cos2/3x
d. y = 1/3cosx

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Which of the following cosine functions has a period of 3 π ?
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b. y = cos...

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