#14305: bug in simplify_radical
------------------------+---------------------------------------------------
Reporter: zimmerma | Owner: burcin
Type: defect | Status: new
Priority: critical | Milestone: sage-5.9
Component: calculus | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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in Sage 5.7 we get:
{{{
sage: (x^2).simplify_radical()
x^2
}}}
This is wrong (consider x=-1 for example). Even:
{{{
sage: assume(x<0)
sage: sqrt(x^2).simplify_radical()
x
}}}
Note: this invalidates a whole part of our book (in french) about Sage at
http://sagebook.gforge.inria.fr/
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14305>
Sage <http://www.sagemath.org>
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and MATLAB
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