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OpenStudy (anonymous):
Find the period of the function. y = -3 cos 1/4x
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OpenStudy (agent0smith):
for y = a cos kx the period is 2pi/b b is 1/4 here
OpenStudy (anonymous):
confused
OpenStudy (anonymous):
hint dividing by \(\frac{1}{4}\) is the same as multiplying by \(4\)
OpenStudy (anonymous):
8π
OpenStudy (anonymous):
bingo
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