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How do you graph -cos (2x)? I am not sure.

Mathematics
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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
So, is the period still 2pie? And do you stay negative the whole way?
period is 2pi/k

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Other answers:

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

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