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Caolco

Is my answer right? Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x) = cos x/2; g(x) = cos x Answer: Horizontal stretch by a factor of 2

  • one year ago
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  1. JakeV8
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    no, I don't think this one is a stretch...

    • one year ago
  2. swissgirl
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    hmmm there seems to be a mistake with the wording of the question. Take a look at ur question again

    • one year ago
  3. Caolco
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    Well that is what I was thinking too, but my book gives me the following options: Horizontal stretch by a factor of 2 Vertical stretch by a factor of 2 Vertical shrink by a factor of 1/2 Horizontal shrink by a factor of 1/2 Originally I chose vertical shrink, but it came back wrong, so I did horizontal shrink, and it also came back wrong. So I don't know at this point.

    • one year ago
  4. Caolco
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    Woops. Thanks @swissgirl

    • one year ago
  5. swissgirl
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    ohh there we gooo

    • one year ago
  6. JakeV8
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    @Caolco I had to call for help again ;)

    • one year ago
  7. swissgirl
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    hmm its def horizontal cuz its x/2 Ohhh I see there is one 1 cycle in 720 degrees so its a horizontal stretch by a factor of 2

    • one year ago
  8. JakeV8
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    oooooohhhhhhhhhhhhh. I completely did not see that. Also, I misread the question :(

    • one year ago
  9. swissgirl
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    There is only a half of one cycle in 360 degrees or another way of saying it is that one cycle takes 720 degrees

    • one year ago
  10. Caolco
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    Ok so I was correct then?

    • one year ago
  11. swissgirl
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    Horizontal stretch by a factor of 2

    • one year ago
  12. swissgirl
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    the graph get stretched instead of taking 360 degrees to finish one cycle it takes 720 degrees to finish the cycle. It takes double the time

    • one year ago
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