luckiegirl28 luckiegirl28

26-02-2015
Mathematics

Answered

Really need some help on this please!
what is the amplitude of the sinusoid given by y=-4 cos(2x)?

Answer :

sugarmate sugarmate

26-02-2015

Amplitude is absolute value of (-4) = 4.

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Panoyin Panoyin

27-02-2015

y = -4cos2x
y =-4(0.9995065604x)
y = -3.998026241x

Answer Link

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