The square root has to be spelled Sqrt in Mathematica. Then 6.0 gets:
2*Sqrt[1 - x^2 + 2*x*x2 - x2^2] + (1 - 2*x2)*ArcSin[x - x2]
RO
Richard Fateman schrieb:
> Barton Willis wrote:
>
>> If somebody with Mathematica / Axiom / ... could try:
>>
>> Integrate[(2*x-1)*sqrt[-(x^2-x-1)*(x^2-x+1)]/((x^2-x-1)*(x^2-x+1)),x],
>>
>>
>>
> Mathematica 6.0 returns the integral unevaluated.
> RJF
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