On 16 říj, 05:45, William Stein wrote:
> On Thu, Oct 15, 2009 at 7:45 PM, Matt Rissler wrote:
>
> > Basically, I'm having student look for the x that makes the matrix
> > singular, or the columns linearly dependent, or ... However Sage
> > behaves like so:
>
> > sage: A=matrix([[0,1,1],[2,2,-2]
On Thu, Oct 15, 2009 at 11:26 PM, Mikie wrote:
>
> OK, I create a function that takes the expression from my form and
> then it does the plot which creates the png file. Then I display the
> image(plot) in the html page. The image has been saved on the
> server. When the session is over the i
On Thu, Oct 15, 2009 at 7:45 PM, Matt Rissler wrote:
>
> Basically, I'm having student look for the x that makes the matrix
> singular, or the columns linearly dependent, or ... However Sage
> behaves like so:
>
> sage: A=matrix([[0,1,1],[2,2,-2],[-1,x,3]])
You could also solve the problem by c
Jason Grout wrote:
>
> sage: x=polygen(QQ)
> sage: A=matrix([[0,1,1],[2,2,-2],[-1,x,3]])
> sage: A.echelon_form()
>
> [ 2 2 -2]
> [ 0 -1 -1]
> [ 0 0 -x + 1]
>
>
Incidentally (while I'm still working on the echelon_form/hermite_form
patch, where echelon_form
Matt Rissler wrote:
> Basically, I'm having student look for the x that makes the matrix
> singular, or the columns linearly dependent, or ... However Sage
> behaves like so:
>
> sage: A=matrix([[0,1,1],[2,2,-2],[-1,x,3]])
> sage: A
> [ 0 1 1]
> [ 2 2 -2]
> [-1 x 3]
> sage: A.echelon_form()
Basically, I'm having student look for the x that makes the matrix
singular, or the columns linearly dependent, or ... However Sage
behaves like so:
sage: A=matrix([[0,1,1],[2,2,-2],[-1,x,3]])
sage: A
[ 0 1 1]
[ 2 2 -2]
[-1 x 3]
sage: A.echelon_form()
[1 0 0]
[0 1 0]
[0 0 1]
Is there anyw
Yes, that is exactly what I want...fractions/pi/etc to auto-
approximate. Or they don't even have to "auto" approximate, but if I
can just call a function that THEN approximates the fractions, pi,
etc. After I re-read my first post, it definitely wasn't very
clear :) But now you know. I wouldn
Yes, that is exactly what I want...fractions/pi/etc to auto-
approximate. Or they don't even have to "auto" approximate, but if I
can just call a function that THEN approximates the fractions, pi,
etc. After I re-read my first post, it definitely wasn't very
clear :) But now you know. I wouldn
Yes, that is exactly what I want...fractions/pi/etc to auto-
approximate. Or they don't even have to "auto" approximate, but if I
can just call a function that THEN approximates the fractions, pi,
etc. After I re-read my first post, it definitely wasn't very
clear :) But now you know. I wouldn
Yes, that is exactly what I want...fractions/pi/etc to auto-
approximate. Or they don't even have to "auto" approximate, but if I
can just call a function that THEN approximates the fractions, pi,
etc. After I re-read my first post, it definitely wasn't very
clear :) But now you know. I wouldn
On Oct 15, 8:31 pm, Scott wrote:
> What I really want is sage to give me the answer as:
> q1 = 0.58239...(however many digits)*q2
>
> Is there a way to do that? I don't want an approximate value of the
> entire thing (obviously you can't get that without giving the value of
> q2), but I want i
What I really want is sage to give me the answer as:
q1 = 0.58239...(however many digits)*q2
Is there a way to do that? I don't want an approximate value of the
entire thing (obviously you can't get that without giving the value of
q2), but I want it to compute whatever it can (in this case that
On Oct 15, 4:12 pm, erikson1970 wrote:
> Piecewise Function: endpoint gotcha - bug or feature?
> It seems that the piecewise function (which requires overlapping
> endpoints for the specified function intervals) does some unadvertised
> averaging for results for values at the endpoints.
>
> See
Dear Scott,
Thanks for posting.
On Oct 15, 6:46 pm, Scott wrote:
> I know this is really basic, but for some reason I cannot figure this
> out and my searching (here, sage website, google, etc) has not yielded
> me any results! I just started using sage, literally, yesterday.
>
> I am using s
I know this is really basic, but for some reason I cannot figure this
out and my searching (here, sage website, google, etc) has not yielded
me any results! I just started using sage, literally, yesterday.
I am using solve() to solve an equation for q1 in terms of q2. The
solution of this is sa
On Oct 15, 2:21 pm, William Stein wrote:
> Are you asking about TinyMCE, i.e., when you "shift-click" and edit
> plain text between cells?
yes
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On Thu, Oct 15, 2009 at 1:32 PM, Chris Seberino wrote:
>
> What is the default font in Sage notebooks? Possible to hardcode a new
> default?
>
> If I don't use the default, I've noticed I must respecify the desired
> font in every new text area because Sage keeps defaulting back to the
> default
Piecewise Function: endpoint gotcha - bug or feature?
It seems that the piecewise function (which requires overlapping
endpoints for the specified function intervals) does some unadvertised
averaging for results for values at the endpoints.
See the sage output from the input below.
Rather than p
What is the default font in Sage notebooks? Possible to hardcode a new
default?
If I don't use the default, I've noticed I must respecify the desired
font in every new text area because Sage keeps defaulting back to the
default font.
cs
--~--~-~--~~~---~--~~
To po
Try the following:
http://trac.sagemath.org/sage_trac/query?max=300&milestone=sage-4.1.2&order=priority#no2
In theory, there should now be now columns. But there are. I also
cannot get it to sort with respect to anything but priority, even when
I click. In particular, I can't get it to sort b
OK, I create a function that takes the expression from my form and
then it does the plot which creates the png file. Then I display the
image(plot) in the html page. The image has been saved on the
server. When the session is over the image will still be on the
server. I would like the image
On Thu, Oct 15, 2009 at 9:16 AM, John C. Beckerle
wrote:
> Dear Sage Advisor:
> I lost my sage notebooks that I prepared sometime last night, the 13th Oct.
> before midnight. My computer is a LapTop Macintosh OS X.4. I had
> successfully downloaded Sage some time ago and was working with two
> n
On Thu, Oct 15, 2009 at 11:19 PM, William Stein wrote:
>> Mikie wrote:
>>> When my users create a plot and their graphing session is finished how
>>> do I remove the png file?
It depends on how you have your program set up. One possibility is
that you can keep track of all the files that you ge
On Thu, Oct 15, 2009 at 8:58 AM, Jason Grout
wrote:
>
> Mikie wrote:
>> When my users create a plot and their graphing session is finished how
>> do I remove the png file?
>
>
> Did you try googling for the answer?
I think his question is sufficiently vague that your answer might not
be what he'
Dear Sage Advisor:
I lost my sage notebooks that I prepared sometime last night, the
13th Oct. before midnight. My computer is a LapTop Macintosh OS X.4.
I had successfully downloaded Sage some time ago and was working with
two notebooks. I must have done something wrong? I could not
ove
Mikie wrote:
> When my users create a plot and their graphing session is finished how
> do I remove the png file?
Did you try googling for the answer?
I typed "python remove files" into google and the first result was the
documentation for the relevant python commands, and the second result
c
When my users create a plot and their graphing session is finished how
do I remove the png file?
On Oct 14, 3:54 pm, Jason Grout wrote:
> Mikie wrote:
> > Jason,
>
> > Looks too easy.
> > I am doing this all in a Python script.
>
> From your answer, it sounds like you figured it out then. Grea
Hi Francois!
Sorry that I can't answer all of your questions, but I hope that
others will step in.
On 15 Okt., 14:27, Francois Maltey wrote:
[...]
> And a second question : I don't find any example in python documentation
> for list with .. as [1..100].
>
> Is it a standard python or a sage fe
Hello,
I play with the timeit function because I want to test the asymptotic
time of complexity for (pseudo-)lists in sage.
I test
timeit('n=5;[2*x for x in [1..10^n]]')
This line is well evaluate and I get a linear answer when I change n
from 2 to 7.
I may add the parameter repeat=1 and num
We generally reject such membership requests as they are assumed to be
spammers. Sorry for the inconvenience.
On Thu, Oct 15, 2009 at 5:02 AM, wrote:
> Dear Colleague,
>
>
>
> I requested to become a member of the SAGE support group but I have not been
> contacted about it yet. I would like to
On Oct 15, 2009, at 2:02 AM, wrote:
> Dear Colleague,
>
> I requested to become a member of the SAGE support group but I have
> not been contacted about it yet. I would like to post a question
> because I have had a problem installing SAGE in SUSE Linux (I
> believe some components may be
Dear Colleague,
I requested to become a member of the SAGE support group but I have not been
contacted about it yet. I would like to post a question because I have had a
problem installing SAGE in SUSE Linux (I believe some components may be missing
from the download) and consequently I cannot
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