#9421: desolve mixes user parameters and integration constants
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Reporter: zimmerma | Owner: burcin
Type: defect | Status: positive_review
Priority: major | Milestone: sage-6.2
Component: calculus | Resolution:
Keywords: | Merged in:
Authors: Paul Zimmermann | Reviewers: Ralf Stephan
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by rws):
With #16007 the output is now
{{{
sage: sage: x=function('x',t)
sage: sage: var('c')
c
sage: sage: desolve(diff(x,t)+2*x==t^2-2*t+c,x,ivar=t).expand()
1/2*t^2 + _C*e^(-2*t) + 1/2*c - 3/2*t + 3/4
sage: desolve(diff(f(x),x,x)-f(x),f(x))
_K2*e^(-x) + _K1*e^x
}}}
As that's a simple and fine solution instead of a warning or an extended
patch I would be glad if someone could review that one-liner.
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Ticket URL: <http://trac.sagemath.org/ticket/9421#comment:10>
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