On Mar 25, 5:28 am, Vladimir Bondarenko <v...@[EMAIL PROTECTED]
> wrote:
> NSum[(Cos[n]/n)^1, {n, 1, Infinity}] slow convergence
> NSum[(Cos[n]/n)^2, {n, 1, Infinity}] fast convergence
>
> 0.0420195 RIGHT
> 0.572578 WRONG
>
> Any comments?
Interestingly, the setting Method -> "EulerMaclaurin" gives a much
more precise answer (0.574138), however, no explicit setting for
Method can reproduce the answer that we get with Method -> Automatic.
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