Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium Solvers
New issue 3506 by [email protected]: AttributeError when solveing
http://code.google.com/p/sympy/issues/detail?id=3506
In [1]: solve(diff(pi**(n/2)/gamma(1 + n/2), n), n)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-1-fddcca034a61> in <module>()
----> 1 solve(diff(pi**(n/2)/gamma(1 + n/2), n), n)
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/solvers/solvers.py in
solve(f, *symbols, **flags)
776
###########################################################################
777 if bare_f:
--> 778 solution = _solve(f[0], *symbols, **flags)
779 else:
780 solution = _solve_system(f, symbols, **flags)
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/solvers/solvers.py in
_solve(f, *symbols, **flags)
1202 # fallback if above fails
1203 if result is False:
-> 1204 result = _tsolve(f_num, symbol, **flags)
1205 if result is None:
1206 result = False
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/solvers/solvers.py in
_tsolve(eq, sym, **flags)
1896
1897 try:
-> 1898 u = unrad(eq, sym)
1899 except ValueError:
1900 raise NotImplementedError('Radicals cannot be cleared
from %s' % eq)
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/solvers/solvers.py in
unrad(eq, *syms, **flags)
2318 # if all the bases are the same or all the radicals are in one
2319 # term, this is the lcm of the radical's exponent denominators
-> 2320 lcm = reduce(ilcm, [r.exp.q for r in rads])
2321
2322 # find the bases of the radicals
AttributeError: 'Mul' object has no attribute 'q'
Bonus points if you recognize that formula.
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