# Untitled

By: a guest on Nov 18th, 2012  |  syntax: None  |  size: 1.27 KB  |  views: 15  |  expires: Never
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1. from sympy import symbols,solve
2.
3. [n_,Re_,p_,i_,J2_,Pe_] = symbols(['n_','Re_','p_','i_','J2_','Pe_'])
4.
5. del_ss = -((3*n_*(Re_**2)*J2_/(4*(p_**2)))*(4-5*(sin(i_)**2)))-((3*n_*(Re_**2)*J2_/(2*(p_**2)))*cos(i_))-((2*pi)/Pe_)
6.
7. pprint(solve(del_ss,i_))
8.
9. Traceback (most recent call last):
10.   File "<stdin>", line 1, in <module>
11.   File "C:Python27libsite-packagesspyderlibwidgetsexternalshellsitecustomize.py", line 479, in runfile
12.     execfile(filename, namespace)
13.   File "C:UsersNathanPythonsympy_test_1.py", line 22, in <module>
14.     pprint(solve(del_ss,i_))
15.   File "C:Python27libsite-packagessympysolverssolvers.py", line 484, in solve
16.     solution = _solve(f, *symbols, **flags)
17.   File "C:Python27libsite-packagessympysolverssolvers.py", line 700, in _solve
18.     soln = tsolve(f_num, symbol)
19.   File "C:Python27libsite-packagessympysolverssolvers.py", line 1143, in tsolve
20.     "(tsolve: at least one Function expected at this point")
21. NotImplementedError: Unable to solve the equation(tsolve: at least one Function expected at this point
22.
23. from sympy import symbols,solve,sin,cos,pi
24.
25. [n_,Re_,p_,ci_,J2_,Pe_] = symbols(['n_','Re_','p_','ci_','J2_','Pe_'])
26.
27. del_ss = -((3*n_*(Re_**2)*J2_/(4*(p_**2)))*(4-5*(1-ci_**2)))-((3*n_*(Re_**2)*J2_/(2*(p_**2)))*ci_)-((2*pi)/Pe_)
28.
29. pprint(solve(del_ss,ci_))
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