Hi Greg,
Hope the following code helps you in implementing your function:
from sage.symbolic.function import SymbolicFunction
class real_nth_root_class(SymbolicFunction):
def __init__(self):
SymbolicFunction.__init__(self, 'real_nth_root', nargs=2)
def _evalf_(self, x, n, parent=No
I think we have a consensus that we should do *something* but unless I am
very much mistaken, the suggestion from Vincent Delecroix and Nils Bruin
that we make a symbolic function has advantages.
I was looking at Nils's code, but I have to confess that I don't understand
that code. Actually, I
As Vincent and Niles have brought up, there might be advantages to it
being a symbolic function. How does one actually go about making that
happen? Is this an intrusive change, or an easy one? I really have no
idea...
---Greg
On Sun, Jun 22, 2014 at 5:00 PM, Vincent Delecroix
<20100.delecr...@gma
As Niles already said it would be better to have it as a symbolic function
sage: f(x) = real_nth_root(x, 5)
sage: f
x |--> real_nth_root(x,5)
2014-06-22 22:36 UTC+02:00, Gregory Bard :
> Yes, that is reasonable. Let us call it "real_nth_root" instead, as
> suggested by Nicolas Thiery. Any other r
Yes, that is reasonable. Let us call it "real_nth_root" instead, as
suggested by Nicolas Thiery. Any other requests/comments?
It would be superb if this could be resolved by June 30th, when my
book goes to the American Mathematical Society for publication...
---Greg
On Sun, Jun 22, 2014 at 9:02 A
On Sun, Jun 22, 2014 at 8:27 AM, Nicolas M. Thiery
wrote:
> On Fri, Jun 20, 2014 at 06:33:52PM -0700, Gregory Bard wrote:
>> It seems that the consensus on both Sage-devel and Sage-edu is to go
>> with some sort of nth_real_root function. I propose the following,
>> which I have tested for evaluat
On Fri, Jun 20, 2014 at 06:33:52PM -0700, Gregory Bard wrote:
> It seems that the consensus on both Sage-devel and Sage-edu is to go
> with some sort of nth_real_root function. I propose the following,
> which I have tested for evaluation, plotting, differentiation, and
> integration. Sadly, the de
It seems that the consensus on both Sage-devel and Sage-edu is to go
with some sort of nth_real_root function. I propose the following,
which I have tested for evaluation, plotting, differentiation, and
integration. Sadly, the derivative has a Dirac delta in it, which is
... perhaps unavoidable bec
On Thursday, June 19, 2014 2:38:11 AM UTC-4, vdelecroix wrote:
>
> Note that there is already a method "nth_root" on several elements
> (ZZ, finite fields, etc). So I would rather go for "real_nth_root"
> which makes things clearer.
>
Perhaps we can then just get away with a "nth_root" symbolic
Note that there is already a method "nth_root" on several elements
(ZZ, finite fields, etc). So I would rather go for "real_nth_root"
which makes things clearer.
Vincent
2014-06-19 2:44 UTC+02:00, Nils Bruin :
> On Wednesday, June 18, 2014 2:37:21 AM UTC-4, Gregory Bard wrote:
>>
>> This has been
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