The Maxima version which is present in Sage fails for this problem, se
the session below.
Which version of Maxima do you use on your computer? In Sage there is
version 5.19.1. Does your computation work in this version of Maxima?
Robert
----------------------------------------------------------------------
| Sage Version 4.2, Release Date: 2009-10-24 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: maxima("expr:1.4*(.1873*z+.1752)/(z-1)/(z-.8187)")
1.4*(0.1873*z+0.1752)/((z-1)*(z-0.8187))
sage: maxima("expr:1.4*(.1873*z+.1752)/(z-1)/(z-.8187)")
1.4*(0.1873*z+0.1752)/((z-1)*(z-0.8187))
sage: maxima("partfrac(expr,z)")
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/marik/<ipython console> in <module>()
/home.ldf/sdileny/sage/local/lib/python2.6/site-packages/sage/
interfaces/expect.pyc in __call__(self, x, name)
1029
1030 if isinstance(x, basestring):
-> 1031 return cls(self, x, name=name)
1032 try:
1033 return self._coerce_from_special_method(x)
/home.ldf/sdileny/sage/local/lib/python2.6/site-packages/sage/
interfaces/expect.pyc in __init__(self, parent, value, is_name, name)
1445 except (TypeError, KeyboardInterrupt,
RuntimeError, ValueError), x:
1446 self._session_number = -1
-> 1447 raise TypeError, x
1448 self._session_number = parent._session_number
1449
TypeError: Error executing code in Maxima
CODE:
sage2 : partfrac(expr,z)$
Maxima ERROR:
Inverse of zero divisor?
sage:
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