#2617: solve() can return undefined points as "solutions"
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Reporter: cwitty | Owner: was
Type: defect | Status: new
Priority: critical | Milestone: sage-4.1.3
Component: calculus | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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Comment(by kcrisman):
Replying to [comment:3 robert.marik]:
> Perhaps related issue is also that the solving acot(x) == 0 ends with
error message "The number 0 isn't in the domain of cot"
>
No, this is an appropriate error message (it's from Maxima, not Sage).
There are no solutions to acot(x)==0, at least over the reals (and
presumably over the complex field as well?). Now that we know about that
error, it would be easy to put a catch in for something like that error
message and return
sage: solve(acot(x),x)
[]
instead. Feel free to open a ticket for that and put me in the cc: field.
But this is unrelated to the issue in the ticket, which is a genuine
Maxima bug, as far as I can tell.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2617#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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