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Another Out of Memory Problem


I can do the following:

Integrate[Cos[2*x]*
      Exp[I*z*Cos[x]],
    {x, -Pi, Pi}]


which produces a Bessel function answer; however if I change the
argument in the cosine to 2.5 as in:

Integrate[Cos[2.5*x]*
      Exp[I*z*Cos[x]],
    {x, -Pi, Pi}]

I almost immediately get this:

No more memory available.
Mathematica kernel has shut down.
Try quitting other applications and then retry.

Any ideas why? I am running XP with 2Gb of memory.

Thanks,

Kevin


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