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Log[c^2 + x^2]/2


Integrate[x/(c^2 + x^2), x] ==
Log[c^2 + x^2]/2



             x
Integrate[-------, x] == 
           2    2
          c  + x

     2    2
Log[c  + x ]
------------
     2

Time to compute: < 0.01 second

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