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-ArcTanh[x/2]/2


Integrate[1/(-4 + x^2), x] ==
-ArcTanh[x/2]/2



             1
Integrate[-------, x] == 
                2
          -4 + x

         x
-ArcTanh[-]
         2
-----------
     2

Time to compute: 0.03 second

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