how do I find the indefinite integral of ((x^2-1)/sqrt(2x-1) )dx?
Substitution and solving for x haven't worked for me. Can someone help me with this? Thanks.
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2 Answers

((x^2-1)/sqrt(2x-1) )

 image

Integrating by parts - let u= x^2-1 so u' = 2x, let v' = (2x-1)^-0.5 so v= 2(2x-1)^0.5

(int by parts formula) image

 image

Integrating by parts again - u=2x, u'=2 v'= 2(2x-1)^0.5, so v=2/3 (2x-1)^1.5image

image

Feel free to tidy this one up, but the hard part is done :P

by Level 3 User (4.6k points)

((x^2-1)/sqrt(2x-1) )

 image

Integrating by parts - let u= x^2-1 so u' = 2x, let v' = (2x-1)^-0.5 so v= 2(2x-1)^0.5

(int by parts formula) image

 image

Integrating by parts again - u=2x, u'=2 v'= 2(2x-1)^0.5, so v=2/3 (2x-1)^1.5image

image

Feel free to tidy this one up, but the hard part is done :P  Also, if i have done any part wrong, please message me as i kept confusing myself with the latex code which is designed to make it easier!

by Level 3 User (4.6k points)

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