#7334: Sage cannot simplify sums of logarithms
-----------------------------------+----------------------------------------
Reporter: whuss | Owner: burcin
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.3.2
Component: calculus | Keywords: logarithm
Author: Robert Mařík | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Merged:
Work_issues: |
-----------------------------------+----------------------------------------
Comment(by robert.marik):
The reviwer patch seems to be O.K. for me. Thanks for fixing typos and
adding docs. Running tests now.
restoring default value of logexpand was not necessary, since 'ev'
environment has been used in my original patch and this has no influence
to the value of logexpand
{{{
sage: maxima('logexpand')
true
sage: maxima('ev(log(x*y),logexpand:false)')
log(x*y)
sage: maxima('logexpand')
true
sage: maxima('ev(log(x*y),logexpand:super)')
log(y)+log(x)
sage: maxima('logexpand')
true
}}}
but the current method without 'ev' enviroment is also O.K. and perhaps
better, since ev may lead sometimes to some other problems and should be
avoided if possible (as I understand discussions related (for example)to
substitution from maxima group).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7334#comment:23>
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.
