Le vendredi 9 février 2024 à 15:42:30 UTC+1, Eric Gourgoulhon a écrit :
I confirm the bug with Sage 10.3.beta7. It seems to be linked with the
Maxima interface.
Meanwhile, a workaround is to use the SymPy interface:
sage: sum((4*n+1)/factorial(n), n, 1, oo, algorithm='sympy')
5*e - 1
FWIW, algorithms giac (and even mathematica) also work.
Eric.
Le vendredi 9 février 2024 à 11:57:08 UTC+1, Georgi Guninski a écrit :
hi,
var('n')
sum((4*n+1)/factorial(n),n,1,oo)
TypeError: 'NoneType' object is not callable
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