* your platform and operating system
* which version of Sage you use (command: "version()" in Sage)
* how you have acquired Sage (binary build, compiled from
source, ...)
* and if applicable, include reproducible commands which cause the
error, along with possible error messages.
The tutorial has a bug at the following link:
http://www.sagemath.org/doc/tutorial/tour_algebra.html#solving-equations-numerically
sage: theta = var('theta')
sage: solve(cos(theta)==sin(theta))
[sin(theta) == cos(theta)]
This example does not produce the output indicated.
{{{
sage: theta = var('theta')
sage: type(theta)
<type 'sage.symbolic.expression.Expression'>
sage: solve(cos(theta)==sin(theta))
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/<ipython
console> in <module>()
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/symbolic/relation.pyc in solve(f, *args,
**kwds)
478 """
479 try:
--> 480 return f.solve(*args,**kwds)
481 except AttributeError:
482 from sage.symbolic.ring import is_SymbolicVariable
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/symbolic/expression.so in
sage.symbolic.expression.Expression.solve (sage/symbolic/
expression.cpp:21623)()
TypeError: solve() takes at least 1 positional argument (0 given)
}}}
solve(cos(theta)==sin(theta), theta), really pissed sage off!
{{{
sage: solve(cos(theta)==sin(theta), theta)
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/<ipython
console> in <module>()
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/symbolic/relation.pyc in solve(f, *args,
**kwds)
478 """
479 try:
--> 480 return f.solve(*args,**kwds)
481 except AttributeError:
482 from sage.symbolic.ring import is_SymbolicVariable
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/symbolic/expression.so in
sage.symbolic.expression.Expression.solve (sage/symbolic/
expression.cpp:22150)()
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/interfaces/expect.pyc in __call__(self,
*args, **kwds)
1380
1381 def __call__(self, *args, **kwds):
-> 1382 return self._obj.parent().function_call(self._name,
[self._obj] + list(args), kwds)
1383
1384 def help(self):
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/interfaces/expect.pyc in function_call
(self, function, args, kwds)
1288 [s.name() for s in
args],
1289 ['%s=%s'%(key,value.name
()) for key, value in kwds.items()])
-> 1290 return self.new(s)
1291
1292 def _function_call_string(self, function, args, kwds):
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/interfaces/expect.pyc in new(self, code)
1084
1085 def new(self, code):
-> 1086 return self(code)
1087
1088
###################################################################
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/interfaces/expect.pyc in __call__(self,
x, name)
1019
1020 if isinstance(x, basestring):
-> 1021 return cls(self, x, name=name)
1022 try:
1023 return self._coerce_from_special_method(x)
/home/steve/sage-4.1-linux-AtomN270-Ubuntu-i686-Linux/local/lib/
python2.6/site-packages/sage/interfaces/expect.pyc in __init__(self,
parent, value, is_name, name)
1423 except (TypeError, KeyboardInterrupt,
RuntimeError, ValueError), x:
1424 self._session_number = -1
-> 1425 raise TypeError, x
1426 self._session_number = parent._session_number
1427
TypeError: Error executing code in Maxima
CODE:
sage4 : to_poly_solve(sage0,sage3)$
Maxima ERROR:
Nonalgebraic argument given to 'topoly'
#0: to_poly_solve(e=cos(theta) = sin(theta),vars=theta)
(topoly_solver.mac line 10)
sage:
}}}
Asus eeepc 1000 running Ubuntu 9.04
sage-4.1-linux-AtomN270-Ubuntu-i686-Linux.tar.gz from Harvard md5sum
checked.
peace
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