anonymous
  • anonymous
Using complete sentences, explain the key features of the graph of the cosine function
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
Alright, so I guess it would be best if you learnt how to make a cosine graph and then you will see clearly what exactly the key features are. So this works for both sine and cosine graphs I'll give you some guidelines on how to draw them.
anonymous
  • anonymous
the domain which is all real numbers the range which is (-1 , 1) the period which = 2pi

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anonymous
  • anonymous
right?
anonymous
  • anonymous
Sounds good!
anonymous
  • anonymous
what else should i add?
anonymous
  • anonymous
Well I was going to show you how to graph it, but that's exactly right! Depending on the graph assuming we're using |dw:1440124411555:dw| we should also mentioned the amplitude, if there is a vertical displacement, and a phase shift. But you do have all the essential parts.
anonymous
  • anonymous
i know the amplitude is the distance between the two thingys.. how do i find it?
anonymous
  • anonymous
That's y = cos(x) graph, so the amplitude is the distance from the mid to the max or from the mid to the min. |dw:1440124547964:dw|
anonymous
  • anonymous
So in this case you will notice it's just 1
anonymous
  • anonymous
okay! and the displacement is 0 correct?
anonymous
  • anonymous
Yup!
anonymous
  • anonymous
Phase shift is 0 as well, so it seem you're good!
anonymous
  • anonymous
Thank you!
anonymous
  • anonymous
Yw :)

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