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(2*x*Sqrt[9 + 4*x^2] + 9*ArcSinh[(2*x)/3])/4

Integrate[Sqrt[9 + 4*x^2], x] ==
(2*x*Sqrt[9 + 4*x^2] + 9*ArcSinh[(2*x)/3])/4 

                      2
Integrate[Sqrt[9 + 4 x ], x] == 

                2              2 x
2 x Sqrt[9 + 4 x ] + 9 ArcSinh[---]
                                3
-----------------------------------
                 4
Time to compute: 0.02 second
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