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(x*Sqrt[25 - x^2])/2 + (25*ArcSin[x/5])/2


Integrate[Sqrt[25 - x^2], x] ==
(x*Sqrt[25 - x^2])/2 + (25*ArcSin[x/5])/2



                     2
Integrate[Sqrt[25 - x ], x] == 

                            x
             2    25 ArcSin[-]
x Sqrt[25 - x ]             5
--------------- + ------------
       2               2

Time to compute: 0.02 second

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