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4 votes
Can you help me find this answer

Can you help me find this answer-example-1
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User Webbies
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1 Answer

4 votes

Answer:

4

Choice D

Explanation:


\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}


\mathrm{Periodicity\:of\:}\cos \left(x\right)\:\mathrm{is}\:2\pi

answered
User Sambomartin
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9.0k points

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