ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Thu, 02 Mar 2017 18:38:16 +0100Symbolic sum with q_binomialhttps://ask.sagemath.org/question/36788/symbolic-sum-with-q_binomial/ Hi,
I'm new to sagemath. I'm trying to define a function that depends on a sum of a q-binomial, but I get "unable to convert n to an integer".
So, this works:
sum(binomial(n,k),k,1,n)
(output gives $2^n-1$)
but this doesn't:
sum(q_binomial(n,k),k,1,n)
All I did was add the "q_", which is the proper way to define a q-binomial in sage, as I already tested (try q_binomial(5,3) and the output is correct).
Anyone can help?ricardoklThu, 02 Mar 2017 18:38:16 +0100https://ask.sagemath.org/question/36788/