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-(Sqrt[-a^2 + x^2]/x) + Log[2*(x + Sqrt[-a^2 + x^2])]

Integrate[Sqrt[-a^2 + x^2]/x^2, x] ==
-(Sqrt[-a^2 + x^2]/x) + Log[2*(x + Sqrt[-a^2 + x^2])] 

                 2    2
          Sqrt[-a  + x ]
Integrate[--------------, x] == 
                 2
                x

         2    2
  Sqrt[-a  + x ]                      2    2
-(--------------) + Log[2 (x + Sqrt[-a  + x ])]
        x
Time to compute: 0.03 second
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