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

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

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

              2
  Sqrt[a - b x ]
-(--------------)
        b
Time to compute: 0.01 second
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