- #1
Asphyxiated
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Homework Statement
[tex] \int \frac {1}{\sqrt{x}(1+\sqrt{x})} dx [/tex]
The Attempt at a Solution
So let
[tex] u = 1 + \sqrt{x} [/tex]
then
[tex] du = \frac {1}{2}x^{-1/2} dx [/tex]
So dx should be this:
[tex] dx = 2x^{1/2} du[/tex]
right?
So now the Problem looks something like this:
[tex] \int \frac {2\sqrt{x}}{\sqrt{x}(u)} du [/tex]
[tex] \int \frac {\sqrt{x}}{(u)} du [/tex]
I am stuck here, I am just not sure where to go from here, the answer is suppose to be:
[tex] 2ln(1+\sqrt{x}) + C [/tex]
but I really don't know how to get there.
thanks!