#8651: binomial(n,k) evaluates to zero when 0 is subsituted for k
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Reporter: rhinton | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.4
Component: symbolics | Keywords: symbolic, binomial
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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We all know binomial(n,0) should be 1. But we're not getting that answer
in the following case.
{{{
sage: var('n, k')
(n, k)
sage: binomial(n, 0) # this is OK
1
sage: binomial(n, k).subs(k=0) # this is a problem!
0
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8651>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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