Running sage in cocalc:
integral(sqrt(1+cos(x)^2),x,0,pi)
0
Zero is decidedly not correct. The problem is apparently here:
integral(sqrt(1+cos(x)^2),x)
-1/24*sin(3*x) + 1/8*sin(x)
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In this page,
http://skink.whitman.edu/~guichard/sage/two_plots_clean.html
I have two sagecells, each to do a 3d plot. If I evaluate the first one, it
works as expected. If I then evaluate the second, it graphs correctly, but
it also replaces the first plot with a copy of the second. Neither of
Thanks!
On Friday, November 30, 2018 at 5:02:27 PM UTC-8, slelievre wrote:
>
>
> Fri 2018-11-30 23:43:00 UTC, David Guichard:
>>
>> In this page,
>>
>> http://skink.whitman.edu/~guichard/sage/two_plots_clean.html
>>
>> I have two sagecells, each to do a 3d plot. If I evaluate the first one,
>> it
In my calculus book I have a number of sagecells. One of them has started
throwing an error involving CORS. Follow this link:
https://www.whitman.edu/mathematics/calculus_online/section13.01.html
and go to the exercise section, click evaluate on the sagecell. When I do
this, I get
Error conne
post: I'm sure that this cell was working just a
few months ago.
-- David
On Sunday, January 27, 2019 at 5:37:00 PM UTC-8, david.guichard wrote:
>
> In my calculus book I have a number of sagecells. One of them has started
> throwing an error involving CORS. Follow this link
When I try to specify a viewer in a plot3d I get an error if I try anything
other than "tachyon". Even viewer='threejs' throws an error, though I think
the default viewer is threejs. What I'm really looking for is a viewer that
lets me display an orthogonal projection instead of perspective. I k
od.
On Monday, February 25, 2019 at 3:28:58 PM UTC-8, Dima Pasechnik wrote:
>
> On Mon, Feb 25, 2019 at 11:26 PM david.guichard
> > wrote:
> >
> > When I try to specify a viewer in a plot3d I get an error if I try
> anything other than "tachyon". Even vie
I have a cocalc sage worksheet that reads data from a csv file. Is there
any way to do this in the single cell server, that is, read data from an
external file? I'm guessing not, but it would be handy.
Thanks,
David
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7, Nils Bruin wrote:
>
> On Tuesday, October 22, 2019 at 8:52:44 AM UTC-7, david.guichard wrote:
>>
>> I have a cocalc sage worksheet that reads data from a csv file. Is there
>> any way to do this in the single cell server, that is, read data from an
>> external file? I&#x
I'm looking for a way to create a symbolic rational variable--it must be
possible, right? I want to do something like this:
R = PolynomialRing(QQ,'x');S.=R.quotient(x^3+x+1);S1. = S[];
(y^3+y+1)(y=a);
var('b1 b2 b3')
(b1+b2*a+b3*a^2)^2
and get
(b2^2+2*b1*b3-b3^2)*a^2+(2*b1*b2-2*b2*b4*b3-b3^2)
I want to do something like this:
R = PolynomialRing(QQ,'x');S.=R.quotient(x^3+x+1);
T.=QQ[]
b*a
Namely, create expressions mixing rational variables and elements of a
quotient field over the rationals.
Doing something like this:
(3/4)*a
is fine, but the b*a, gives me
TypeError: unsupported
Thanks!
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Is it possible to turn on typeset mode in the single cell server?
-- David
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I have some sage cells in a couple of online textbooks, and mostly just
wanted to unclutter the line for students. Using "show" is OK, I was just
hoping that like sagenb and the cloud I could make it the default.
-- David
On Tuesday, March 8, 2016 at 7:06:47 AM UTC-8, kcrisman wrote:
>
>
>
> On
The computation in this worksheet appears to be incorrect:
https://cloud.sagemath.com/projects/7e41f0e6-e297-41cf-b7a7-a7c11d3943c1/files/integration%20error.sagews
Maple gives the value as :
but even without that the Sage value is clearly wrong.
-- David
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Just starting to play with the single cell server--very cool. Is it
possible to adjust the fontsize in latex output? That is, if I'm saying
"show(...)" to get typeset output, can I specify the fontsize?
Thanks,
David
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It does seem that this should be happening more or less automatically.
I do notice that sage uses jmol_applet, which doesn't appear to be
part of jmol, so I assume it should be loaded from sagenb.org. My
javascript console for a published page shows an error, that
jmol_applet is not defined. The co
I just tried publishing a worksheet with jmol plots on our campus
server, v4.6, and the published page includes the interactive jmol.
-- David
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I've tried this on my 4.6 sage and on 5.0 beta; the main sagenb.org is not
returning calculations for me. Both 4.6 and 5.0 have the same error. This
double integral calculation is correct:
var("r t")
f=integral(sqrt(1-r^2*cos(t)^2)*r,r,0,1)
g=integral(f,t)
g; g(t=pi/4)-g(t=0)
but this one i
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