Hi,
I am trying to plot this trignometric function using plot3D, but I
keep getting this "value error: free variable". I run Sage 3.2.3 on
Win XP Sp2 (WMware 2.5.2)
Here's the code:
var('t1 t2 m1 m2 H sap saf')
E(t1,t2)= -1*m1*H*sin(t1) - m2* H * sin(t2)+sap * cos(t2-t1)-saf * sin
(t1);
mp1 = 0.33;
mp2 = 0.39;
sap = 1.2;
saf = 0.4;
H = 10;
plot(E,(t1,-5,5),(t2,-5,5))
What am I doing wrong? Please help:
Here's the error message I get:
Traceback (click to the left for traceback)
...
ValueError: free variable: mp2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/notebook/sage_notebook/worksheets/admin/8/code/3.py",
line 13, in <module>
plot(E,(t1,-_sage_const_5 ,_sage_const_5 ),(t2,-
_sage_const_5 ,_sage_const_5 ))
File "/usr/local/sage/local/lib/python2.5/site-packages/
zope.interface-3.3.0-py2.5-linux-i686.egg/", line 1, in <module>
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/plot/
misc.py", line 388, in wrapper
return func(*args, **kwds)
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/plot/
misc.py", line 285, in wrapper
return func(*args, **options)
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/plot/
plot.py", line 1602, in plot
G = funcs.plot(*args, **original_opts)
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 975, in plot
f = F._fast_float_(param)
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 4898, in _fast_float_
fops = [op._fast_float_(*vars) for op in self._operands]
File "/usr/local/sage/local/lib/python2.5/site-packages/sage/
calculus/calculus.py", line 5443, in _fast_float_
raise ValueError, "free variable: %s" % self._name
ValueError: free variable: mp2
--~--~---------~--~----~------------~-------~--~----~
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-support
URL: http://www.sagemath.org
-~----------~----~----~----~------~----~------~--~---
