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

Really need some help on this please! what is the amplitude of the sinusoid given by y=-4 cos(2x)?
asked 15.8k views
2 votes
Really need some help on this please!

what is the amplitude of the sinusoid given by y=-4 cos(2x)?

asked
User Magiclantern
by
8.0k points

2 Answers

5 votes
y = -4cos2x
y =-4(0.9995065604x)
y = -3.998026241x
answered
User DoDo
by
6.8k points
3 votes
Amplitude is absolute value of (-4) = 4.
answered
User Hardi
by
8.4k points
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