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November 19th, 2012, 10:33 AM   #1
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Integrating Trigonometric Functions

Can anyone help me confirm if I've solved this correctly?

Many thanks.

Q. By writing & by then using the substitution , show that .


Attempt:
Change of Variable:
Therefore,
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November 19th, 2012, 10:36 AM   #2
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Re: Integrating Trigonometric Functions

Looks almost good to me, you need 3 as the exponent on cos

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November 19th, 2012, 11:18 AM   #3
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Re: Integrating Trigonometric Functions

Great, thank you.
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