How to Evaluate the Integral of y/sqrt(1-y^2) using Substitution

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yoleven
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Homework Statement


[tex]\int[/tex] sin^-1y dy

The Attempt at a Solution


u=sin^-1y
du=[tex]\frac{1}{\sqrt{1-y^2}}[/tex]
v=y
dv=dy

[tex]\int udv=uv-[/tex] [tex]\int vdu[/tex]

=ysin^-1y-[tex]\int \frac{y}{\sqrt{1-y^2}}[/tex]

my main trouble is evaluating the integral at this point.
I would appreciate it if someone could show me how to evaluate the integral
[tex]\int \frac{y}{\sqrt{1-y^2}}[/tex]

If it was [tex]\frac{1}{y}[/tex] then I can see it would be ln x
 
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Assuming the work leading to your last integral is correct (I didn't check), you can use an ordinary substitution, u = 1 - y^2, du = -2u du. It's pretty straightforward.