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Topic: integration by substitution
Replies: 2   Last Post: Jun 7, 2012 7:53 AM

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From: here
Registered: 6/5/12
Re: integration by substitution
Posted: Jun 7, 2012 7:53 AM
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But anything with a square inside a square root cries out for a trig substitution. Let x= sin(u) so that (1- x^2)^(1/2)= (1- sin^2(u))^(1/2)= (cos^2(u))^(1/2)= cos(u)
and dx= cos(u)du.

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