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Math Help - Graphing cos^2(x) or any other function like that.

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    Graphing cos^2(x) or any other function like that.

    How would the graph of this look like?

    Do you need to use the identity to graph it or is it like when you square a parabola to make it x^4 it becomes steeper?
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  2. #2
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    Quote Originally Posted by Kuma View Post
    How would the graph of this look like?

    Do you need to use the identity to graph it or is it like when you square a parabola to make it x^4 it becomes steeper?
    From the double angle formula: \displaystyle \cos^2(x) = \frac{\cos(2x) + 1}{2}.
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