anonymous
  • anonymous
How do you graph -cos (2x)? I am not sure.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
do you know what a normal cos graph looks like? Well, because you want a negative one, you would do it upside down. and since you want "2x", it will be squashed twice as much towards the y axis
anonymous
  • anonymous
So, is the period still 2pie? And do you stay negative the whole way?
anonymous
  • anonymous
period is 2pi/k

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anonymous
  • anonymous
|dw:1355613895882:dw|
anonymous
  • anonymous
is that right?
anonymous
  • anonymous
thats -cosx, you haven't accounted for the 1/2 compression
anonymous
  • anonymous
|dw:1355614177155:dw|
UnkleRhaukus
  • UnkleRhaukus
|dw:1355614330835:dw|
anonymous
  • anonymous
ok, so flip it upside down and that will give me y=-cos 2x?
UnkleRhaukus
  • UnkleRhaukus
thats right
anonymous
  • anonymous
k thank you

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