#2697: [with patch, negative review] allow integration without explicit variable
declaration
-------------------------+--------------------------------------------------
Reporter: was | Owner: was
Type: enhancement | Status: new
Priority: major | Milestone: sage-3.2.1
Component: calculus | Resolution:
Keywords: |
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Changes (by robertwb):
* summary: [with patch, needs review] allow integration without explicit
variable declaration => [with patch, negative
review] allow integration without explicit
variable declaration
Comment:
I'm getting
{{{
sage: integrate(sin(x), pi, 2*pi)
------------------------------------------------------------
Traceback (most recent call last):
File "<ipython console>", line 1, in <module>
File "/Users/robert/sage/sage-3.1.3/local/lib/python2.5/site-
packages/sage/calculus/functional.py", line 254, in integral
return f.integral(*args, **kwds)
File "/Users/robert/sage/current/local/lib/python2.5/site-
packages/sage/calculus/calculus.py", line 2586, in integral
raise TypeError, 'only one endpoint given'
TypeError: only one endpoint given
}}}
Rather than catching the error that, say, 0 is not a valid variable name,
perhaps one should look at the number of variables passed to determine how
to integrate. E.g.
{{{
sage: integrate(sin(x)) # 0 args, implicit indefinite
cos(x)
sage: integrate(sin(x), y) # 1 arg, explicit indefinite
sin(x)*y
sage: integrate(sin(x), pi, 2*pi) # 2 args, implicit definite
-2
sage: integrate(sin(x), y, pi, 2*pi) # 3 args, explicit definite
pi*sin(x)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2697#comment:3>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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