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23-03-2018
Mathematics

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Find the period of the function. y = -3 cos x

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Professor1994 Professor1994

23-03-2018

y=-3 cos x
y= a cos (bx+c) + d
a=-3, b=1, c=0, d=0
Period: P=2Pi/b, where Pi is the constant 3.1416
Replacing b=1 in the formula above:
P=2Pi/1
P=2Pi

Answer: The period of the function y=-3 cos x is 2Pi

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