If your not the same person..then well someone got the same problem as you =P

[Kerbox]

Hey guys,

I could really use some hints on how to solve the integral \int \frac{x}{1+\sqrt{x}} dx
I tried some substitutions, and doing some manipulations on the expression, with no solution. Any help would be much appreciated.

Regards,

Kerbox

 

[neutrino]

1+\sqrt{x} = t

 

[Kerbox]

yea, tried that. but I end up with an expression where x can't be canceled. unless I am missing something here.

 

[cristo]

Post your steps, and we can see if you made a mistake.

 

[morphism]

Notice that x = (t - 1)^2.

 

[thebuttonfreak]

you could use the residue theorem from complex analysis (I think)

 

[Crosson]

you could use the residue theorem from complex analysis (I think)

The residue theorem does not pertain to antiderivatives.

 

[Gib Z]

I helped someone else on exactly the same integral in scienceforums.net and I have a really good feeling your the same person, since your post is identical..and your username is the same >.<

Just incase..: http://www.scienceforums.net/forum/showthread.php?t=24664

My name in scienceforums.net is Ragib btw.