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


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



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

        2    2                   x
  Sqrt[a  - x ] + x ArcTan[-------------]
                                 2    2
                           Sqrt[a  - x ]
-(---------------------------------------)
                     x

Time to compute: 0.05 second

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