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 Post subject: evaluating the integralPosted: Mon, 18 Aug 2008 17:51:56 UTC
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Joined: Wed, 16 Jul 2008 18:09:23 UTC
Posts: 10

pi/3
~ 7 cos 2tdt
0

the line in middle in the integral sign lol, dont know how you do it.
thanks.

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 Post subject: Posted: Mon, 18 Aug 2008 18:21:33 UTC
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Joined: Thu, 1 Jan 2004 06:47:21 UTC
Posts: 2735
Location: Norman, Oklahoma
Where are you stuck? Try a substitution.

Dave

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 Post subject: integralPosted: Fri, 22 Aug 2008 17:33:24 UTC
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Joined: Wed, 16 Jul 2008 18:09:23 UTC
Posts: 10
well , it needs to be evaluated

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 Post subject: working outPosted: Fri, 22 Aug 2008 17:35:57 UTC
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Joined: Wed, 16 Jul 2008 18:09:23 UTC
Posts: 10
i need to substitute in the values of t, separate substitutions and then subtract the first from the second. ???

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 Post subject: Posted: Wed, 27 Aug 2008 15:13:31 UTC
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Joined: Wed, 10 Jan 2007 19:16:15 UTC
Posts: 650
Location: England

Therefore,

So

as

Hmm...I think that's about right...unless I screwed up somewhere (summer holidays have a habit of killing my brain cells)

That's also assuming you meant - if you meant then you would have to use the formula:

Unless i'm missing something obvious, which makes this integral far more complex than I realised, I think this thread belongs in 'Calculus' rather than Advanced Maths ^^

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