find_fit takes data and fits it to a given sage expression. But the
thing I don't like is that it returns a list of equations, each of which
indicates the value of a certain parameter. What one is interested more
often though is not he individual values of the parameters, but the
model as a who
Hello!
I've come across this strange bug:
sage: var('x y')
(x, y)
sage: a=x-y/x
sage: a
x - y/x
sage: print a
x - y/x
sage: latex(a)
x + \frac{y}{x}
that last + should be a -. This also doesn't work in the notebook, using
print a works, but show(a) shows the expression with a plus sign.
Any id
I'm trying to find the solutions to solve this equation
sage: a=8594.0*x^3 - 30768.0 *x^2 + 36399.0 *x -14224.0
sage: b=solve(a==0,x)
sage: for i in b:
: c=i.rhs()
: print c.n()
:
1.19783952189420 - 4.16333634234434e-17*I
0.998467807920659 + 1.38777878078145e-17*I
1.3838648833
Hello people!
I've been trying to solve this integral:
sage: integrate(sqrt(sec(x)-1),x,pi/2,pi)
integrate(sqrt(sec(x) - 1), x, 1/2*pi, pi)
Since sage failed to produce a symbolic result, I tried with
numerical_integral
sage: numerical_integral(sqrt(sec(x)-1),pi/2,pi)
(nan, nan)
But that fa
There hasn't been a date set for the release of sage-4.6
http://trac.sagemath.org/sage_trac/milestone/sage-4.6
It's been a lot of tim now and I've seen no date. There are no blockers
in trac so I don't see why there shouldn't be a date. I hope I'm not
being annoying here, but previous releases
I want to propose the following changes to the output format of find_fit
and solve:
for find_fit the current output format is a list of equations:
sage: data = [(i, 1.2 * sin(0.5*i-0.2) + 0.1 * normalvariate(0, 1)) for
i in xsrange(0, 4*pi, 0.2)]
sage: var('a, b, c, x')
sage: model(x) = a * s
Hello!
I've been using TexMacs for some time now, but I have been frustrated by
not being able to use Sage from it.
I've downloaded and installed the sage plugin in
http://wiki.sagemath.org/TeXmacs, but I can't see the Sage option in the
sessions menu.
Sage is installed in ~/sage/sage-4.6
As a continuation of the recent cloning of ploting methods found in
mathematica. I've started a clone of RevolutionPlot3D.
http://reference.wolfram.com/mathematica/ref/RevolutionPlot3D.html
The corresponding ticket is http://trac.sagemath.org/sage_trac/ticket/7889
Examples at: http://www.sagenb
The dropdown menu that shows the different interfaces is missing scilab.
Using %scilab in a notebook cell works though
I opened a ticket about this in
http://trac.sagemath.org/sage_trac/ticket/7911
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I'm having trouble commiting my changes with mercurial**
I've made some changes to the code and typed
hg_sage.commit() then I get the following line:
waiting for lock on working directory of
/home/oscar/sage-4.3/devel/sage-m1 held by 'oscar-laptop:22296'
and after a long wait:
abort: working
After considerable battling with Mercurial, I've made a patch to include
coordinate transformations
in plot3d as well as spherical_plot3d and cylindrical_plot3d.
The docstrings of those two are improperly formated though...
Thanks to all who have helped me with this!
Oscar
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I've just added a patch for this one! Perhaps you could review?
http://trac.sagemath.org/sage_trac/ticket/7889
thanks!
Oscar
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Hi! I am giving a Python workshop in the uni, and i'd like to include
Sage as a final topic to show Python's potential.
I'd love to tell my students that Sage included everything they liked
about Python and more. But there is one thing missing, and that is
syntax hilighting. People have loved
I am studying quantum mechanics for the first time, and I would love to
have some software dedicated to solving quantum mechanics problems to
make my life easyer.
AFAIK Cadabra is the only free software dedicated to this:
http://cadabra.phi-sci.com/
I will take some time to get familiarized w
Some time ago I suggested in sage-support
(http://groups.google.com/group/sage-support/browse_thread/thread/b391ed6bd14cdfd0)
I'd like to propose that certain special names should be protected so
that they could not become variable names (for example pi, e, and i)
if by accident you assign th
It would be great if sage could have widgets like the ones wolphram
alpha has:
http://www.wolframalpha.com/downloads.html
I particularly like the one in:
http://phisycsandgnulinux.site11.com/
(I take this chance to invite you to my new website, if you know spanish...)
thank you!
Oscar
--
T
I've recently had trouble with an integral:
sage: integral(x^3/(e^x-1),x,0,oo)
TypeError: unable to make sense of Maxima expression
'limit(6*li[4](e^x)-6*x*polylog3(e^x)+3*x^2*polylog2(e^x)+x^3*log(1-e^x)-x^4/4,x,inf)-pi^4/15'
in Sage
Other mathematical software (Mathematica) make numeri
I am very impressed with the math equation editor at:
* http://www.math.union.edu/~dpvc/talks/2006-12-08.IMA/editor.html
I would like to spend some time this summer working on it. In
particular, i'd like to adapt it to work within the Sage notebook.
I have begun to learn javascript, which I u
I've recently started using numpy more seriously, and i've made sage
wrappers (that is sage functions that simply call numpy to do the job)
for numpy's fast fourier transform and polynomial fit. I thought those
might get included in sage, but the start of sage is already quite slow.
My guess i
I just want to call attention here in sage-devel to what I consider to
be an important bug:
http://trac.sagemath.org/sage_trac/ticket/9385
I'm compiling Sage in a fedora 13 Intel Core Duo laptop (1.8 Gb RAM). It
normally takes about 6 hours to build previous versions of sage,
however, it now
Hello,
I just noticed the post on sage 5 pre alpha, so i wondered whether sage
5 with the cygwin port to windows will be released soon, will it?!
Thanks!
Oscar
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