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GEIvey
Posts:
14
From:
here
Registered:
6/5/12


Re: integration by substitution
Posted:
Jun 7, 2012 7:53 AM


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.



