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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Originally Posted by Kuma 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: $\displaystyle \displaystyle \cos^2(x) = \frac{\cos(2x) + 1}{2}$.
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