chris215
  • chris215
Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x) = 4 cos x; g(x) = cos x
Mathematics
schrodinger
  • schrodinger
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chris215
  • chris215
vertical stretch by a factor of 4?
chris215
  • chris215
wait no horizontal?
anonymous
  • anonymous
Yes, it would be. The range would be from [-1,1] to [-4,4] Therefore it stretched vertically from a factor of 4.

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chris215
  • chris215
oh ok lol thanks
anonymous
  • anonymous
It cant be horizontal because only the y coordinate are increasing. If it was cos(x-pi/2) from cos(x), then it would have a horizontal or compressional factor.
anonymous
  • anonymous
No problem!

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