#6882: bug in conversion of "i" from Maxima to Sage
------------------------+---------------------------------------------------
Reporter: was | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.4
Component: calculus | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
------------------------+---------------------------------------------------
Changes (by robert.marik):
* upstream: => N/A
Comment:
As another consequence, solving of ode y'=c*x is not correct, the free
variable is messed up with a parameter, see [http://groups.google.cz/group
/sage-devel/browse_thread/thread/e04cbc547095f2ac sage-devel] - thanks for
Yuri Karadzhov
{{{
[ma...@um-bc107 /opt/sage-4.3.4]$ ./sage
----------------------------------------------------------------------
| Sage Version 4.3.4, Release Date: 2010-03-19 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: from sage.calculus.calculus import
symbolic_expression_from_maxima_string
sage: symbolic_expression_from_maxima_string('%c')
c
sage: c=var('c'); y=function('y',x); eq=diff(y,x)==c*x; eq
D[0](y)(x) == c*x
sage: desolve(eq,y,ivar=x)
1/2*c*x^2 + c
}}}
the answer should be something like 1/2*c*x^2 + c1
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6882#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
