Can someone please help me integrate 1 - (cos x)^2 ? Thanks!
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Originally Posted by turtle Can someone please help me integrate 1 - (cos x)^2 ? Thanks! You can write, By difference of two squares. Now, use integration by parts.
There's nothing wrong with what TPH is doing :-), I personally hate integration by parts. It's long and dreaful, personally: , using double angle formula for cos2x, Tada!
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