The rather obvious www.mathlynx.com LOL!
Instructors can request accounts by writing to mathl...@gmail.com.
I will put a student on the code-posting issue.
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support+unsubsc
hn A. Velling
*
I have started a student driven business: MathLynx, where we are creating
dynamically generated texts for standard college/university level classes.
99% complete on precalc - calc 1 var - calc n var sequence. The content
is created by several faculty memb
Jason:
I have a couple of students for whom this is on the summer project list
(rather high on said list). If we make substantial progress I will
certainly pass along results.
BTW, we have built a MathML -> "Sage input" translator. This allows us to
take simple expressions produced from, say
Is it possible to customize Sage (or somehow edit its conversion of
strings) so that exp(x), which gets output by latex conversion as "e^x",
now gets output by latex conversion as "\mathrm{e}^x"?
John A. Velling
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscri
It would be nice if this included the ability to write 3d animations with
Sage.
On Thursday, March 8, 2012 4:56:08 PM UTC-5, Jason Grout wrote:
>
> On 3/8/12 3:40 PM, Thierry Dumont wrote:
> > Le 08/03/2012 14:44, Jori Mantysalo a écrit :
> >> On Mon, 5 Mar 2012, P Purkayastha wrote:
> >>
> >>>
Another issue arose yesterday when I was looking for extrema of a cubic
poly over an interval. There were two critical points in the interval
(roots of the derivative quadratic equation), but the extrema were at the
endpoints. Sage returned the critical points & values rather than the
endpoin
But why does minimization seem to work fine?
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/sage-support
URL: http:
line 365, in sage.libs.ecl.python_to_ecl
(sage/libs/ecl.c:3292)
File "ecl.pyx", line 282, in sage.libs.ecl.ecl_safe_read_string
(sage/libs/ecl.c:2805)
File "ecl.pyx", line 265, in sage.libs.ecl.ecl_safe_funcall
(sage/libs/ecl.c:2650)
RuntimeError: ECL says: THROW: The catch
The codefind_minimum_on_interval(x*sin(x),.5,2.5)works like a
charm, giving (0.23971279031301418, 0.500228822995) as output.
But the codefind_maximum_on_interval(x*sin(x),.5,2.5)gives a mess.
Plotting works fine ( plot(x*sin(x),(x,.5,2.5)) ).
Is there some notational
When I downloaded and installed SAGE, a copy of jmol must have been
installed for presenting 3d graphics. I would like to update this
copy to the most recent version of jmol available, but I cannot find
it in the file structure installed. Where is jmol? Any special info
needed to update?
--
To
In Maple there is the option orientation=[#1,#2,#3] to tell the
display mechanism what the viewer's position is vis-a-vis the viewed
object. I don't know how to do something like this in Sage. Tried
rotateX, etc., but this rotates the object in a standard euclidean
coordinate system, thus alterin
John, Andrzej - thanks! I will have to examine when to add a colon
and when not to. You guys are killing me - LOL.
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com
For more options, vis
let me alter the first line to x,y,z,t = var('x,y,z,t')
On Sep 14, 5:49 pm, MathLynx wrote:
> What is wrong with
>
> x,y,z = var('x,y,z')
> P = implicit_plot3d(x^2 +y^2 -z^2 ==1, (x,-3.2,3.2),(y,-3.2,3.2),
> (z,-3,3),opacity=.2,color='blue')
> for
What is wrong with
x,y,z = var('x,y,z')
P = implicit_plot3d(x^2 +y^2 -z^2 ==1, (x,-3.2,3.2),(y,-3.2,3.2),
(z,-3,3),opacity=.2,color='blue')
for k in range(20)
P += parametric_plot3d([cos((2*pi*k)/(20))+sin((2*pi*k)/
(20))*t,sin((2*pi*k)/(20))-cos((2*pi*k)/(20))*t,t],
(t,-3,3),color='red',thick
I entered
plot(2*x^3-5*x^2-x+1,(x,.3819,.382),hue=1,thickness=2,ticks=[.
5,None])
and got a plot where the tick marks were at the correct places but the
labels were of the form 3.819e-1 and 3.82e-1. How do I get them to
read .3819, .38195 and .382 (or .3820)?
--
To post to this group, sen
Egad! I just got pummeled! This will take a while to absorb -
thanks, Simon. Just starting on the learning curve...
On Aug 31, 6:04 am, Simon King wrote:
> Hi!
>
> On 31 Aug., 09:50, MathLynx wrote:
>
> > Thanks! But the question remains, how do I force the addition 1/x
then
to look?
On Aug 30, 11:06 am, Alastair Irving
wrote:
> On 30/08/11 14:59, MathLynx wrote:
>
> > (1) How does one define a field of rational functions in several
> > variables? QQ[x,y] gives me the ring of polynomials in x& y over QQ,
> > but 2*x/y is not in this
(1) How does one define a field of rational functions in several
variables? QQ[x,y] gives me the ring of polynomials in x & y over QQ,
but 2*x/y is not in this ring.
(2) I want to be able to check if an object is in this field, and have
the work-around or forcing the addition of expressions (like
True. But the conditional
sage: A=x+x^2
sage: if A.operator()=="":
sage: print "Y"
sage: else:
sage: print "N"
fails to give "Y". How can I patch this up?
On May 15, 1:57 am, Jason Grout wrote:
> On 5/14/11 8:32 PM, MathLynx wrote:
Both Maple and Mathematica allow the user to move around within plots
- zooming and translating (and rotating in 3-d). Is there any such
functionality with Sage plots? I have already noted that one can use
a mouse to rotate 3-d plots.
Secondly, is it possible to include Sage generated plots in H
How can I use Sage to determine if an expression is a sum - i.e. if
the last operation performed is either addition or subtraction?
Thus, I would like to identify "a*(b+c)" as a product but "a*b+a*c" as
a sum.
It would be nice to also identify the number of summands in an
addition - or multiplica
ust as well have said
R = PolynomialRing(QQ, 'A,B')
x,y = R.gens()
?
Thanks in advance!
John
On May 10, 2:22 pm, Sebastian Ramacher wrote:
> On 05/10/2011 07:59 PM, MathLynx wrote:
>
> > How do I detect the degree of a polynomial (say over Q) in one or
> > several v
How do I detect the degree of a polynomial (say over Q) in one or
several variables?
x = var('x');
B = x^2;
B.deg()
gives an error. How about
x,y = var('x , y');
B = x^2 + y^3;
and we want degree of B with respect to x? (presuming wrt y is the
same)
--
To post to this group, send email to sa
Too easy! I'll start to make them harder as I learn... LOL
On May 10, 1:53 pm, Volker Braun wrote:
> Python uses indentation for blocks:
>
> sage: x,y = var('x, y');
> sage: A = x+y == 3;
> sage: if A.substitute(x=1,y=2):
> : print "Yes"
> : else:
> : print "No"
> :
>
I am trying to learn basic Sage functionality and need a bit of
coaching. Here is one example that I have not been able to figure
out. This is all being done within a Notebook.
x,y = var('x, y');
A = x+y == 3;
bool(A.substitute(x=1,y=2))
returns "True", but
x,y = var('x, y');
A = x+y == 3;
if
25 matches
Mail list logo
