#11202: Add inverse method to symbolic expressions
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Reporter: ltw | Owner: tba
Type: enhancement | Status:
needs_review
Priority: minor | Milestone: sage-5.0
Component: symbolics | Resolution:
Keywords: InverseFunction, inverse function | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by eviatarbach):
Okay, will do.
I don't know what you mean by it not being "fully featured". It should be
able to handle any invertible functions, assuming solve supports them.
Those are really the only limitations here. If it can't solve it, it just
leaves it unevaluated, the same way that solve does. For example,
{{{
(abs(x) == y).solve(x)
[abs(x) == y]
}}}
Don't think there are many places for this to go wrong, since all it does
is switch around two variables and solves for one of them. But I will add
some test cases (or did you want someone else to do it, since you said
"from whomever tests it"?). I did include a multivariate example, by the
way. I don't know what you mean by functions defined by integrals; could
you please give an example?
Thank you.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11202#comment:7>
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