#9825: desolve_system unable to interpret Maxima's temporary variables
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Reporter: rhinton | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.7
Component: calculus | Keywords: calculus, maxima, symbolics
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by kcrisman):
On [ this Maxima list thread] we get the original system in Maxima
notation - thanks to Stavros Macrackis:
{{{
de1: diff(x1(t),t)=-3*(x2(t)^2-1);
de2: diff(x2(t),t)=1;
desolve([de1,de2],[x1(t),x2(t)]);
}}}
He also provides a simpler example which does this:
{{{
desolve([diff(f(x),x)=f(x^2)],[f(x)]);
}}}
The suggestion is that the ilt should be replacing the `?g1234` type
variables (which are indeed dummy variables, but native Lisp ones) by
Maxima-type ones, so I am putting to reported upstream, developers
acknowledge bug. However, my feeling is that we should fix this by
parsing these things as well, should they come up again.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9825#comment:1>
Sage <http://www.sagemath.org>
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