Re: Issue 56 in mpmath: Moving sofa demo script

[mpm...@googlecode.com]

Comment #8 on issue 56 by smi...@gmail.com: Moving sofa demo script
http://code.google.com/p/mpmath/issues/detail?id=56

Just a reminder that the system can be reduced to two equations if you
eliminate A and B from the system. (e.g. solve expressions 0 and 2 for A
and B and then solve the remaining two equations for Phi and theta). Using
sympy's nsolve gives:

>>> nsolve([e1,e3],[Phi,theta],[0.1,.5])
matrix(
[['-0.942845232974915'],
['0.68171791938912']])
>>> nsolve([e1,e3],[Phi,theta],[0.2,.5])
matrix(
[['0.0453589103507513'],
['1.02936055239276']])