#3980: [with patch, positive review] Find_root bug
----------------------+-----------------------------------------------------
Reporter: kcrisman | Owner: jwmerrill
Type: defect | Status: new
Priority: minor | Milestone: sage-3.2
Component: calculus | Resolution:
Keywords: |
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Changes (by mhampton):
* summary: [with patch, needs review] Find_root bug => [with patch,
positive review] Find_root bug
Comment:
OK, this passes tests and it seems OK. One thing I noticed, which I think
can be considered beyond the scope of this patch, is that
{{{
var('t')
plot(sin(t*x),-1,1)
}}}
quickly fails with "ValueError: free variable: x", which is good, but:
{{{
plot(lambda t: sin(t*x),-1,1)
}}}
tries to plot 400 values and finally gives
{{{
verbose 0 (3585: plot.py, _plot) WARNING: When plotting, failed to
evaluate function at 400 points.
verbose 0 (3585: plot.py, _plot) Last error message: 'float() argument
must be a string or a number'
}}}
and an empty plot. It would be nice to speed up that failure if you know
an easy way.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/3980#comment:7>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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