sage: 1492.digits(10)
[2, 9, 4, 1]
Now is there an easy way to take this list and get back the integer
1492?
Regards,
JM
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On Sep 30, 10:24 pm, Jim Clark <[EMAIL PROTECTED]> wrote:
> Thank you Jason! I have looked through the documentation for vector
> analysis examples, without success. I was not aware of the gradient()
> function.
>
> HOWEVER, the bug that I came upon in my initial effort is real.
I don't think
On Sep 30, 6:26 pm, Jim Clark <[EMAIL PROTECTED]> wrote:
> Hi there,
>
> I found a teeny bug in sage's rendering of fractional exponents (3/2
> in this case) in notebook's output:
>
> sagebug.tiff
> 54KViewDownload
Hi Jim,
Try replacing %delW with %latex(delW). Or just do
sage: show(W.gradi
On Sep 27, 2:02 am, "Mike Hansen" <[EMAIL PROTECTED]> wrote:
> The patch at 4201 adds the features and the documentation back :-)
> Thanks for keeping an eye open.
Likewise :-). Guess if I had read your ticket, I would have seen that
you were already on top of it.
JM
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On Sep 26, 4:07 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote:
> Hi Jason,
>
> On Fri, Sep 26, 2008 at 9:05 AM, Jason Bandlow <[EMAIL PROTECTED]> wrote:
> > A student of mine noticed the following and it looks like a bug to me
> > (at least with the documentation).
>
> This was a regression caused b
On Sep 23, 3:58 pm, Andy <[EMAIL PROTECTED]> wrote:
> I am programming for a project in sage and I want to make use of the
> solve() function. However, I noticed that solve() does not return the
> value of the solved variable but only a statement instead.
>
> For instance, if I wanted to do solve
> John Cremona
>
> 2008/9/23 aniura <[EMAIL PROTECTED]>:
>
>
>
> > hi,
>
> > I wanted to know if there is a way to work in Sage with arrays of
> > matrices or something similar (something like a[i,j,k], so that
> > a[i,:,:], a[:,j,:] and a[:,:,k] are all matrices. I tried to use a
> > list of matr
On Sep 17, 12:31 am, Jason Merrill <[EMAIL PROTECTED]> wrote:
> On Sep 16, 11:45 pm, Jason Merrill <[EMAIL PROTECTED]> wrote:
>
> > Can I ever get sage to print something like
>
> > sage: (x - x).some_devious_trick()
> > x - x
>
> Just wanted to d
On Sep 16, 11:45 pm, Jason Merrill <[EMAIL PROTECTED]> wrote:
> Can I ever get sage to print something like
>
> sage: (x - x).some_devious_trick()
> x - x
>
> If there is a way to do this, or if there could be a way to do this
> that wouldn't foul everything up,
The documentation for simplify explains:
Expressions always print simplified; a simplified expression is
distinguished because the way it prints agrees with its underlyilng
representation.
sage: x - x
0
sage: type(x - x)
sage: type(simplify(x - x))
So until hit with an explicit simplify comma
This is http://trac.sagemath.org/sage_trac/ticket/3717. Feeling
motivated to fix it?
JM
On Sep 16, 6:56 pm, Jason Grout <[EMAIL PROTECTED]> wrote:
> I'm writing an @interact to solve simple 2nd order differential
> equations and plot solutions. In it, I'd like to typeset the formula:
>
> show(
On Sep 13, 5:16 pm, Sand Wraith <[EMAIL PROTECTED]> wrote:
> Hello,
>
> tell please, how to access spline like function? for example i have:
>
> p=list();
> p.append([1,1]);
> p.append([2,1.5]);
> p.append([3,2]);
> p.append([4,0]);
> s=spline(p)
>
> and i can get value of s in any point: s(1) or
On Sep 12, 4:48 pm, Sand Wraith <[EMAIL PROTECTED]> wrote:
> Hi all! Help please again :-)
>
> here is worksheet describes my problem:
>
> http://75.75.6.176/home/pub/8/
>
> so, at the last stem i have wrong result: 0 instead of 2/3.
>
> what i am doing wrong?
It looks like there are a few proble
On Sep 12, 2:34 pm, mabshoff <[EMAIL PROTECTED]
dortmund.de> wrote:
> On Sep 10, 7:11 pm, Jason Merrill <[EMAIL PROTECTED]> wrote:
>
> Hi Jason,
>
> > I had been having trouble for a while figuring out how to load jpgs
> > into a usable form on OS X. The o
On Sep 11, 10:32 am, Jason Merrill <[EMAIL PROTECTED]> wrote:
>
> We should think hard about making things easy to partially evaluate.
> Why not have all the special functions behave like polylog?
> Furthermore, it would ideally be easy for a user to define their own
> funct
On Sep 11, 9:07 am, "John Cremona" <[EMAIL PROTECTED]> wrote:
> This works:
>
> plot(lambda t:bessel_J(1, t), (1, 10))
>
> so (1) a one-variable function is reequired, and the lambda
> construction creates such a function from the2-variable bessel_J, and
> (2) the range is a tuple (xmin,xmax) .
>
I had been having trouble for a while figuring out how to load jpgs
into a usable form on OS X. The optional PIL spkg that gets installed
through sage -i PIL-1.1.5.spkg would throw an IOError when I tried to
load in a jpeg, complaining that the jpeg decoder wasn't available.
I found a work aroun
On Sep 8, 4:12 pm, Sand Wraith <[EMAIL PROTECTED]> wrote:
> Hi all!
>
> I do not know - it is an bug, or my mistake. I am trying to plot sum
> of a few same functions:
>
> This is my function:
> B=10*sqrt( pi)/7;
> b=pi/7;
> c(f)=B*exp(-(b*f)^2);
> plot(c(f),(f,-5,5));
>
> in the output i see co
On Sep 7, 6:30 am, "John Cremona" <[EMAIL PROTECTED]> wrote:
> It should be lightly easier than it is to convert a vector of length n
> to either an nx1 matrix or a 1xn matrix:
>
> sage: v = vector(srange(5))
> sage: v
> (0, 1, 2, 3, 4)
> sage: matrix(QQ,1,5,[v])
> [0 1 2 3 4]
> sage: matrix(QQ,5,
On Sep 6, 7:26 pm, Jason Merrill <[EMAIL PROTECTED]> wrote:
> Is there a simple way to think of the difference between a vector with
> n elements, and a 1 by n matrix in Sage. When would I want to use one
> instead of the other?
>
> sage: m = matrix([1,2,3,4,5])
>
Is there a simple way to think of the difference between a vector with
n elements, and a 1 by n matrix in Sage. When would I want to use one
instead of the other?
sage: m = matrix([1,2,3,4,5])
sage: parent(m)
Full MatrixSpace of 1 by 5 dense matrices over Integer Ring
sage: v = vector([1,2,3,4,
On Sep 4, 7:23 am, "John Cremona" <[EMAIL PROTECTED]> wrote:
> 2008/9/4 David Philp <[EMAIL PROTECTED]>:
>
> I think this is better:
>
> http://sagemath.org/doc/ref/module-sage.rings.real-mpfr.html
>
> since RDF (double precision reals) is deprecated. Again, look for
> is_infinity.
>
> John Crem
Be careful with bool. It will return False for equations that may be
true. Simple example:
sage: bool(x == 0)
False
I believe in some cases it will return False for equations that are
actually True if sage doesn't know how to make the necessary
simplifications. But if it returns True, you can
On Aug 30, 7:46 pm, Robert Dodier <[EMAIL PROTECTED]> wrote:
> From the direction this discussion has taken I'm guessing that
> nobody here is aware that selective evaluation is trivial in Lisp,
> and Maxima. In both cases a single quote marks stuff that
> isn't evaluated. Maxima further marks a d
On Aug 29, 3:07 am, Burcin Erocal <[EMAIL PROTECTED]> wrote:
> On Thu, 28 Aug 2008 15:28:03 -0400
>
>
>
> Tim Lahey <[EMAIL PROTECTED]> wrote:
> > Hi,
>
> > Maple has a really useful feature of inert integrals
> > and derivatives. Basically, the integrals and derivatives
> > show up in the equatio
On Aug 26, 9:37 pm, Robert Bradshaw <[EMAIL PROTECTED]>
wrote:
> On Tue, 26 Aug 2008, William Stein wrote:
>
> > On Tue, Aug 26, 2008 at 5:34 PM, Jason Merrill <[EMAIL PROTECTED]> wrote:
> >> Does Sage have a double factorial somewhere that I'm missing. If
I couldn't find a double factorial function in sage. That is,
n!! == n*(n - 2)*(n - 4)...
Does Sage have a double factorial somewhere that I'm missing. If not,
could it?
Regards,
JM
--~--~-~--~~~---~--~~
To post to this group, send email to sage-support@google
On Aug 24, 5:43 pm, Stan Schymanski <[EMAIL PROTECTED]> wrote:
> I think it would be very nice to include a solve algorithm for
> inequalities. To my knowledge, Mathematica does not do this, either.
> Or at least, I did not find out how to do it in Mathematica after 4
> years of use.
In Mathemati
Plotting jacobi("sn",x,2) doesn't work, although plotting
jacobi("sn",x,1) does work.
sage: parent(plot(jacobi("sn",x,1),(x,-3,3)))
sage: parent(plot(jacobi("sn",x,2),(x,-3,3)))
Callable function ring with arguments (x,)
Regards,
JM
--~--~-~--~~~---~--~~
To pos
On Aug 20, 4:23 pm, Roger <[EMAIL PROTECTED]> wrote:
> What is the difference between:
>
> sage: derivative(3*x,x)(2)
>
> which gives an error, and
>
> sage: f(x) = 3*x
> sage: derivative(f,x)(2)
>
> which returns 3, and
>
> sage: f(x) = 3*x
> sage: derivative(f(x),x)(2)
>
> which also gives an er
On Aug 19, 8:23 pm, Mike Witt <[EMAIL PROTECTED]> wrote:
> As long as I'm here, a 2nd question. Using the command line interface,
> is there any way I can spawn more than one window to render different
> plots in them at the same time? (Of, if Ticket #2380 is likely to be
> worked on in the nea
Every time I follow a link to a published worksheet at sagenb.org, I
just see an empty worksheet. The latest example is
https://www.sagenb.org/home/pub/1745/
which I followed from trac #2549
http://trac.sagemath.org/sage_trac/ticket/2549
I can provide more examples on request. Why are so man
On Aug 19, 3:15 pm, pong <[EMAIL PROTECTED]> wrote:
> I have the exact same problem.
>
> 1) I'm not sure what Data...-> Upload file means. I tried that in a
> notebook session as suggested but got a syntax error. I also try
> Upload? but no information is available.
Data is one of the select boxe
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