Hmm... I don't think you can simply use the u-substitution technique here, as there is no term on the outside. Any idea?
Last edited by scorpion007; May 4th 2009 at 06:00 AM. Reason: typo
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Originally Posted by scorpion007 Hmm... I don't think you can simply use the u-substitution technique here, as their is no term on the outside. Any idea? Let . Then use some double angle formulas.
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