#2697: [with patch, needs review] allow integration without explicit variable
declaration
-------------------------+--------------------------------------------------
Reporter: was | Owner: kcrisman
Type: enhancement | Status: new
Priority: major | Milestone: sage-3.4
Component: calculus | Resolution:
Keywords: |
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Comment (by kcrisman):
I don't have a chance to review this yet (tomorrow?) but at least want to
point out that the other day I noticed that the functionality did also not
work for CallableSymbolicExpression (e.g. lines 5779 or so the integral()
method), which seems to have an even more primitive version of the same
code. E.g., to try the original example for this ticket:
{{{
sage: f(x)=x
sage: f
x |--> x
sage: type(f)
<class 'sage.calculus.calculus.CallableSymbolicExpression'>
sage: integrate(f,-1,1)
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<snip>
sage: f.integral(-1,1)
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<snip>
}}}
But this does work, so I think one would really have to fix the
CallableSymbolicVariable piece:
{{{
sage: f.integral(x,-1,1)
0
sage: integral(f,x,-1,1)
0
}}}
Thanks for working on this - I knew it would be impossible for me to get
to it until after the semester, and that proved to be true.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2697#comment:9>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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