Why are you giving the argument z to the residue function ? If you wanted
the residue at 0 put that. But exp (2/z) is not meromorphic at 0 so the
residue there is surely undefined ?
On Nov 5, 2015 3:53 AM, "Rob Beezer" <[email protected]> wrote:
>
>
> On Wednesday, November 4, 2015 at 7:37:58 PM UTC-8, vdelecroix wrote:
>>
>> z/2 vs 2/z
>>
>
> Ouch! Sorry. Wrong input, same output.
>
> z = var('z')
> f = e^(2/z)
> f.residue(z)
>
> Result: 0
>
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