I use sympy-0.7.6.win32.
I tried it with a faster computer and it returns that :
solve(8.99*x*(-x + 1)**1.9 + 3.1*(-x + 1)**2.1 - 3.1*(-x + 1)**2.9, x)
Traceback (most recent call last):
File "<pyshell#0>", line 1, in <module>
solve(8.99*x*(-x + 1)**1.9 + 3.1*(-x + 1)**2.1 - 3.1*(-x + 1)**2.9, x)
File "C:\Python34\lib\site-packages\sympy\solvers\solvers.py", line 909,
in solve
solution = _solve(f[0], *symbols, **flags)
File "C:\Python34\lib\site-packages\sympy\solvers\solvers.py", line 1218,
in _solve
u = unrad(f_num)
File "C:\Python34\lib\site-packages\sympy\solvers\solvers.py", line 2885,
in unrad
neq = unrad(eq, *syms, cov=cov, dens=dens, n=len(rterms), rpt=rpt,
take=_take)
File "C:\Python34\lib\site-packages\sympy\solvers\solvers.py", line 2885,
in unrad
neq = unrad(eq, *syms, cov=cov, dens=dens, n=len(rterms), rpt=rpt,
take=_take)
File "C:\Python34\lib\site-packages\sympy\solvers\solvers.py", line 2781,
in unrad
eq = _mexpand(eq)
File "C:\Python34\lib\site-packages\sympy\simplify\sqrtdenest.py", line
13, in _mexpand
return expand_mul(expand_multinomial(expr))
File "C:\Python34\lib\site-packages\sympy\core\function.py", line 2006,
in expand_multinomial
power_base=False, basic=False, multinomial=True, log=False)
File "C:\Python34\lib\site-packages\sympy\core\cache.py", line 91, in
wrapper
retval = cfunc(*args, **kwargs)
File "C:\Python34\lib\functools.py", line 458, in wrapper
result = user_function(*args, **kwds)
File "C:\Python34\lib\site-packages\sympy\core\expr.py", line 2871, in
expand
expr, hit = Expr._expand_hint(expr, hint, deep=deep, **hints)
File "C:\Python34\lib\site-packages\sympy\core\expr.py", line 2804, in
_expand_hint
arg, arghit = Expr._expand_hint(arg, hint, **hints)
File "C:\Python34\lib\site-packages\sympy\core\expr.py", line 2804, in
_expand_hint
arg, arghit = Expr._expand_hint(arg, hint, **hints)
File "C:\Python34\lib\site-packages\sympy\core\expr.py", line 2812, in
_expand_hint
newexpr = getattr(expr, hint)(**hints)
File "C:\Python34\lib\site-packages\sympy\core\power.py", line 819, in
_eval_expand_multinomial
expansion_dict = multinomial_coefficients(len(p), n)
File "C:\Python34\lib\site-packages\sympy\ntheory\multinomial.py", line
145, in multinomial_coefficients
return dict(multinomial_coefficients_iterator(m, n))
File "C:\Python34\lib\site-packages\sympy\ntheory\multinomial.py", line
237, in multinomial_coefficients_iterator
t1 = _tuple(t)
MemoryError
Le samedi 31 janvier 2015 20:51:45 UTC+1, Aaron Meurer a écrit :
>
> Is this in the latest version of SymPy? For me, it returns [0.0, 1.0]
> after a few seconds.
>
> Aaron Meurer
>
> On Fri, Jan 30, 2015 at 7:27 AM, Arnaud Usciati <[email protected]
> <javascript:>> wrote:
>
>> Hello,
>>
>> I try to find solutions for : 8.99*x*(-x + 1)**1.9 + 3.1*(-x + 1)**2.1 -
>> 3.1*(-x + 1)**2.9 == 0
>> I use >>> solve(8.99*x*(-x + 1)**1.9 + 3.1*(-x + 1)**2.1 - 3.1*(-x +
>> 1)**2.9, x) but it runs endless !!!!
>>
>> Any ideas to fix it ?
>>
>> PS : sorry for my english, i'm french :)
>>
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