On 12/23/2009 2:45:40 AM, GCOOK wrote:
>I tried to double integrate
>1/(1-(x*y)^2)and got a
>"complex" answer. ...
>GC
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I will end it there, demonstrated and illustrated. For mortals of our kind (simple users) there is simply too much behind the scene of the CAS numerical integration, that's it. For this example, I'm convinced Maple is correct as well as Mathematica. Considering that Mathematica runs 600 pages of coding and exhausts all possible and known numerical integrations, and that it didn't report any of the blue page warning, then the numerical value is good to me and for yourself too if you wish.
jmG