can someone check my answer? and show me what/ how to get the amplitude?

Question

anonymous · Answer

is the period correct? & what is amplitude?

ganeshie8 · Answer

y = Acos(bx+c)

amplitude = |A|

kc_kennylau · Answer

http://www.yourdictionary.com//images/computer/WAVELEN.GIF http://www.wolframalpha.com/input/?t=crmtb01&f=ob&i=plot%20-2cos(5x)

kainui · Answer

Amplitude is just what we call the amount a wave wobbles away from the middle position. Think of amplitude like a pendulum. It goes back and forth, but if you stop it, then it suddenly has an amplitude of 0, since it's not even wobbling. The more you wobble it, the greater its amplitude.

So let's look at just plain sine and cosine. What do they do? They wobble between -1 and 1. That's it. They might wobble faster or slower depending on what you put inside, but they don't wobble other than that. Now since that amplitude is 1, no matter what number you multiply a sine or cosine function by will now become the amount it wobbles away from 0. It is usually recorded as the positive number, since it will wobble to the negative and positive version of itself, and that should make sense.

anonymous · Answer

so amplitude is 2 ? and -2 ?

anonymous · Answer

was my period right? :(

loser66 · Answer

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