Changes between Initial Version and Version 1 of Ticket #28964, comment 1


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Timestamp:
Jan 7, 2020, 9:32:31 AM (3 years ago)
Author:
Nils Bruin
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  • Ticket #28964, comment 1

    initial v1  
    1515}}}
    1616These are Pynac errors. So I suspect that there is a differentiation that doesn't have its variable specified, and that with only two variables around (one for the integration!) it ends up choosing that variable. So my guess is either Pynac itself or the way we interface with it.
     17
     18The same problem seems to arise the other way around as well:
     19{{{
     20sage: integrate(f(x,t),x).diff(t)
     21f(x, t)
     22}}}
     23
     24we can make that cause an error by fiddling with some more variables and then we see that the error traces back in something being called from `_sympysage_integral()`, so I think this error was introduced relatively recently, when sympy was added as an integrator by default.