#1158: mathematical functions should remain symbolic
-------------------------+--------------------------------------------------
Reporter: zimmerma | Owner: gfurnish
Type: enhancement | Status: assigned
Priority: minor | Milestone: sage-4.1.1
Component: calculus | Keywords:
Reviewer: | Author:
Merged: |
-------------------------+--------------------------------------------------
Comment(by mvngu):
OK, I get the same inconsistent behaviour:
{{{
----------------------------------------------------------------------
| Sage Version 4.1, Release Date: 2009-07-09 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: sin(10)
sin(10)
sage: Ei(10)
2492.22897624
sage: sin(x)
sin(x)
sage: Ei(x)
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/mvngu/.sage/temp/sage.math.washington.edu/32665/_home_mvngu__sage_init_sage_0.py
in <module>()
/usr/local/sage/local/lib/python2.6/site-
packages/sage/functions/transcendental.pyc in Ei(z)
261 """
262 import scipy.special, math
--> 263 return CDF(-scipy.special.exp1(-complex(z)) +
complex(0,math.pi))
264
265 def Li(x, eps_rel=None, err_bound=False):
/usr/local/sage/local/lib/python2.6/site-
packages/sage/symbolic/expression.so in
sage.symbolic.expression.Expression.__complex__
(sage/symbolic/expression.cpp:5609)()
TypeError: unable to simplify to complex approximation
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/1158#comment:8>
Sage <http://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
-~----------~----~----~----~------~----~------~--~---
