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Integrate[Sqrt[-a + x]*Sqrt[-b + x], x] ==
(Sqrt[-a + x]*Sqrt[-b + x]*(-a - b + 2*x) -
(a - b)^2*Log[2*(Sqrt[-a + x] + Sqrt[-b + x])])/4
Integrate[Sqrt[-a + x] Sqrt[-b + x], x] ==
(Sqrt[-a + x] Sqrt[-b + x] (-a - b + 2 x) -
2
(a - b) Log[2 (Sqrt[-a + x] + Sqrt[-b + x])]) / 4
Time to compute: 0.08 second
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