On Aug 19, 5:39 pm, robin hankin wrote:
> Hello Simon
>
> thanks for this. One problem
> with the solution you mention is that I can't do the
> general case. What I need is the sage equivalent
> of mathematica's Reduce[] function.
>
I think that solve() is the closest that comes to this (thoug
Because i want to solve the double pendulum problem .It seems that
there's not a multivariable (theta_1 thetha_2) ode solver in sage.
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Hello Simon
thanks for this. One problem
with the solution you mention is that I can't do the
general case. What I need is the sage equivalent
of mathematica's Reduce[] function.
Is there one?
rksh
On Thu, Aug 19, 2010 at 10:06 PM, Simon King wrote:
> Hi!
>
> On 19 Aug., 22:41, robin hankin
Hi!
On 19 Aug., 22:41, robin hankin wrote:
> sage>solve([a*b==15*I-5,a*conjugate(b)==-13*I+9],[a,b])
> []
>
> So, from the first two lines I know that a=2+I, b=1+7I should
> be a solution to the system in the third, yet solve() returns empty.
Admittedly I am no expert for symbolics, and I don't
hello everyone
I can't make solve() do what I want.
Look at this:
sage> (2+I)*(1+7*I)
15I-5
sage> (2+I)*(1-7*I)
-13I+9
sage>solve([a*b==15*I-5,a*conjugate(b)==-13*I+9],[a,b])
[]
So, from the first two lines I know that a=2+I, b=1+7I should
be a solution to the system in the third, yet solve(
On 19 Aug, 18:52, kcrisman wrote:
> > I wonder if there is a reason for this. Do the additions break the
> > lexeme or is there a syntactic ambiguity...
>
> William or Mike H. would know for sure, but I believe the additions
> are all invalid Python which happen to be convenient mathematics :)
> I wonder if there is a reason for this. Do the additions break the
> lexeme or is there a syntactic ambiguity...
William or Mike H. would know for sure, but I believe the additions
are all invalid Python which happen to be convenient mathematics :)
> > And using the preparse() command to find
On Aug 19, 1:16 pm, Tobias Katz wrote:
> Hi,
> since ask.sagemath.org seems not to work at the moment and I really need
> a solution for this, I write to the mailing-list.
You only posted there 36 minutes ago! Most likely someone will have
answered there eventually. I just tried, but got a tr
On 19 Aug, 18:19, kcrisman wrote:
> On Aug 19, 12:48 pm, Bill Hart wrote:
>
> > I'm not sure if that is what he means. He is using Sage to load
> > the .py file, not python.
>
> Exactly. Sage interprets .py files as pure Python, I believe. But it
> turns .sage files into .py files which have
On Aug 19, 12:48 pm, Bill Hart wrote:
> I'm not sure if that is what he means. He is using Sage to load
> the .py file, not python.
>
Exactly. Sage interprets .py files as pure Python, I believe. But it
turns .sage files into .py files which have already been 'preparsed'.
A .py file is just P
Hi,
since ask.sagemath.org seems not to work at the moment and I really need
a solution for this, I write to the mailing-list.
I need to create a zoomed subarea in a Matplotlib-Plot under sage.
In the Matplotlib galery is pretty much what i need.
http://matplotlib.sourceforge.net/examples/axes_g
I'm not sure if that is what he means. He is using Sage to load
the .py file, not python.
So he wants to know which modules to import to be able to use
multivariate polynomials in Sage from a (sage, not python) .py file.
He is trying to develop for Sage, not just use it from the sage
prompt.
My a
Dear Andrew,
It turns out that
R.=PolynomialRing(GF(5),2,"z")
is not valid Python, I believe; Sage has a 'preparser' that helps make
more things possible. I believe if you do
sage: preparse('command')
you will see the actual Python that gets done. One the other hand,
you could just name your
If i input
R.=PolynomialRing(GF(5),2,"z")
direclty to sage it accepts it as a polynomial ring
But if i try to save it as part of a .py file and then load it from
there into sage
ie sage my.py it gives me a syntax error
what module am i missing and so what command do i need to make sage
recognise it
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