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How to solve this integration question

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How to solve this integration question

Postby Steve Mckenna » Sun Jul 26, 2009 12:25 pm

Evaluate ∫ s/√s2+42 ds

This definite integral has the range 0 - 3.
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integration by substitution

Postby ilianko » Mon Jul 27, 2009 12:36 pm

substitute
[tex]s=4\tan{x}[/tex]

[tex]ds=\frac{1}{\cos^2{x}}[/tex]

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Postby Steve Mckenna » Wed Jul 29, 2009 3:45 am

Many thanks. :D

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