On Wednesday, July 16, 2014 4:11:09 PM UTC-7, Chris Maness wrote:
>
> I am a bit new to Sage, what method would you recommend for finding
> the solutions numerically?
>
The routine you were using should be quite OK if you give it input for
which it's valid. So first do some work to determine in
I am a bit new to Sage, what method would you recommend for finding
the solutions numerically?
Thanks,
Chris
On Wed, Jul 16, 2014 at 4:07 PM, Nils Bruin wrote:
> On Wednesday, July 16, 2014 3:49:06 PM UTC-7, Chris Maness wrote:
>>
>> But I am getting some strange results. Only one root that doe
On Wednesday, July 16, 2014 3:49:06 PM UTC-7, Chris Maness wrote:
>
> But I am getting some strange results. Only one root that does not
> match the graph.
>
with:
sage: find_root??
you find that this code calls (via some horrible indirections: find_root
calls f.find_root, which calls find_
I am trying to find the roots of the equation:
-cot(x)=sqrt(Z^2/x^2-1)
Z=10;
p1=plot(-cot(x),(x,0,10,),color='red',ymin=-20, ymax=20 );
p2=plot(sqrt(Z^2/x^2-1),(x,0,10));
show(p1+p2);
find_root(cot(x)+sqrt(Z^2/x^2-1),0,10);
But I am getting some strange results. Only one root that does not
matc
On Wednesday, July 16, 2014 11:41:49 AM UTC-7, Nils Bruin wrote:
> That's because "and" and "or" are program flow constructs in python, as
> they are in C (they have "shortcut evaluation" behaviour. They are
> equivalent to
>
> (x<2) if bool(x<2) else (x<1)
>
> and
>
> (x<2) if not(bool(x<2)) el
Robert Pollak wrote:
Hello!
>
> I see the following wrong results:
>
> sage: x<2 and x<1
> x < 2
> sage: x<2 or x<1
> x < 1
>
> Is this just a syntax problem? How would I enter this correctly?
>
The best way to manipulate logical combination of inequalities might be to
use polyhedra.
It's
On Wednesday, July 16, 2014 1:25:03 AM UTC-7, robert.pollak wrote:
>
> Hello!
>
> I see the following wrong results:
>
> sage: x<2 and x<1
> x < 2
> sage: x<2 or x<1
> x < 1
>
That's because "and" and "or" are program flow constructs in python, as
they are in C (they have "shortcut evaluati
Thanks for the replies!
I had already had some file system troubles when I tried building on the
cluster's nfs store. The problem there had to do with "cp -p" not
preserving permissions. So I was building on the cluster's other network
file storage, which uses lustre (which I know next to nothi
Hello!
I see the following wrong results:
sage: x<2 and x<1
x < 2
sage: x<2 or x<1
x < 1
Is this just a syntax problem? How would I enter this correctly?
Robert
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