OK, I posted pull request #2499.
https://github.com/sympy/sympy/pull/2499
Heiner
Am Mittwoch, 2. Oktober 2013 17:14:16 UTC+2 schrieb Ondřej Čertík:
On Wed, Oct 2, 2013 at 7:42 AM, Heiner Kirchhoffer
heiner.ki...@gmail.com javascript: wrote:
I just realised that the this issue is related
, Oct 1, 2013 at 9:20 AM, Heiner Kirchhoffer
heiner.ki...@gmail.com javascript: wrote:
Hello,
When using the branch fix-root-isolation-bounds of repository
https://github.com/mattpap/sympy.git;, the following code produces an
OverflowError:
a = x**45 - 45*x**44 + 990*x**43
Hello,
When using the branch fix-root-isolation-bounds of repository
https://github.com/mattpap/sympy.git;, the following code produces an
OverflowError:
a = x**45 - 45*x**44 + 990*x**43 - 14190*x**42 + 148995*x**41 - 1221759*x**
40 + 8145060*x**39 - 45379620*x**38 + 215553195*x**37 -
ondrej...@gmail.comjavascript:
wrote:
Hi Heiner,
On Fri, Sep 20, 2013 at 9:39 AM, Heiner Kirchhoffer
heiner.ki...@gmail.com javascript: wrote:
Hello,
some months ago I started using sympy for finding roots of polynomials.
It works really well and it enables me to solve
Hi Mateusz and all,
refine_root() doesn't work with non-squarefree polynomials. Unfortunately
it's not written in the documentation. Remove root multiplicities with
sqf() and then proceed with your original approach, e.g.:
In [8]: sqf_list(f)
Out[8]:
⎛ ⎡⎛ 2 ⎞⎤⎞
⎝1, ⎣⎝x -
Hi smichr and all,
Thank you for your quick response.
Does that mean that the method 'refine_root()' of class 'Poly' is not
capable of finding isolation intervals for all real roots of an arbitrary
polynomial?
If so, this would, unfortunately, render the method 'refine_root()' useless
for my
Hello,
method 'refine_root()' of class 'Poly' seems to unexpectedly raise an
exception.
The following code produces the exception:
x = Symbol( x )
p = Poly( x**4 - 6*x**3 + 11*x**2 - 6*x + 1 )
p.refine_root( 0, 1 ) # raises: sympy.polys.polyerrors.RefinementFailed:
there should be exactly one
