[ using the substitution, x = costheta] dtheta dtheta never mind i got it
Last edited by differentiate; September 25th 2009 at 07:21 AM. Reason: got the answer
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Hello differentiate Originally Posted by differentiate [ using the substitution, x = costheta] dtheta dtheta x = cos@ when x = 1, @ = 0 when x = 1/2 @ = pi/3 what do I do next? The integral becomes , which you can solve using , and noting that . Grandad
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