Question

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

Answer 1

no, I don't think this one is a stretch...

Answer 2

hmmm there seems to be a mistake with the wording of the question. Take a look at ur question again

Answer 3

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.

Answer 4

Woops. Thanks @swissgirl

Answer 5

ohh there we gooo

Answer 6

@Caolco I had to call for help again ;)

Answer 7

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

Answer 8

oooooohhhhhhhhhhhhh. I completely did not see that. Also, I misread the question :(

Answer 9

There is only a half of one cycle in 360 degrees or another way of saying it is that one cycle takes 720 degrees

Answer 10

Ok so I was correct then?

Answer 11

Horizontal stretch by a factor of 2

Answer 12

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