anonymous
  • anonymous
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
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Horizontal stretch by a factor of 2
dumbcow
  • dumbcow
the input into the "cos" function changed from x to x/2 this means the period has changed...a period is the time it takes for 1 cycle period = 2pi/B , where B is coefficient of x
dumbcow
  • dumbcow
haha yeah that is correct longer period means its stretched out

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anonymous
  • anonymous
not by 1/2 tho right
dumbcow
  • dumbcow
right, "1/2" would mean the period got shorter
dumbcow
  • dumbcow
if it was cos(2x) .... that would be Horizontal stretch by factor of 1/2
anonymous
  • anonymous
thank you !!!!
dumbcow
  • dumbcow
yw :)

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