SOLUTION: determine the period and amplitude of y=4 cos(3x/4+pi/4)

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Question 577031: determine the period and amplitude of y=4 cos(3x/4+pi/4)
Answer by htmentor(1343) About Me  (Show Source):
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determine the period and amplitude of y=4 cos(3x/4+pi/4)
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The cos term can be no larger than 1, so the amplitude is 4 [the factor in front of the oscillating term]
The period is given by 2%2Api%2FT+=+3%2F4 or T+=+8%2Api%2F3