Hi.
I seem to be getting zero for a divergent integral:
SageMath % ./sage
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 7.5.1, Release Date: 2017-01-15 │
│ Type "notebook()" for the browser-based notebook interface. │
│ Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: var('x')
x
sage: integrate(x/(1+x^2),x,0,infinity)
0
This integral is definitely divergent so I'd say that reporting zero is
misleading, I would expect either an error or to return 'infinity', or to
report that the integral is divergent.
best wishes
Robin
--
Robin Hankin
Neutral theorist
[email protected]
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