Hi Oscar,
In this context, it is sufficient to think of a differential of a
function f as being given by the formula
d f = Df dt,
where Df is the total derivative. See also
http://en.wikipedia.org/wiki/Total_derivative
The line f = F(x^2 + y + sin(z)) turns the function x^2 + y + sin(z)
On Oct 9, 8:24 pm, Jason Grout wrote:
> On 10/9/10 9:53 AM, Chris Seberino wrote:
>
> > What's easiest way to get Sage running on Windows for non-techie
> > students?
>
> > They'll be lost if the instructions are complicated.
>
> > Possible to wrap a VMWare + Ubuntu + Sage blob into one big Wind
On Oct 9, 10:53 pm, Mike Hansen wrote:
> On Mon, Oct 4, 2010 at 4:03 PM, jpc wrote:
> > Why does the plot
> > plot(k%1,k,0,5)
>
> For a symbolic variable 'k', k%1 returns an error since the notion of
> a symbolic mod operation hasn't been implemented.
>
> > What can be used instead ?
>
> You
On Oct 9, 2:58 pm, jvkersch wrote:
> Hi Oscar,
>
> In Sage 4.6 (currently 4.6alpha2) you will be able to do this using
> differential forms:
>
> sage: x, y, z = var('x, y, z')
> sage: U = CoordinatePatch((x, y, z))
> sage: F = DifferentialForms(U)
>
> sage: f = F(x^2 + y + sin(z)); f
> (x^2 + y +
On Mon, Oct 4, 2010 at 4:03 PM, jpc wrote:
> Why does the plot
> plot(k%1,k,0,5)
For a symbolic variable 'k', k%1 returns an error since the notion of
a symbolic mod operation hasn't been implemented.
> What can be used instead ?
You can just delay the application of the mod operation:
plot(
On 10/9/10 9:53 AM, Chris Seberino wrote:
What's easiest way to get Sage running on Windows for non-techie
students?
They'll be lost if the instructions are complicated.
Possible to wrap a VMWare + Ubuntu + Sage blob into one big Windows
exe file that requires no set up?
Since we can't redis
This command
plot(k%1,k,0,5)
produce an error.
That % python operator does differently from "simple" modulo:
>>1.9%1
-0.1
>> 1.5%1
-0.5
>> 2.5 %1
0.5
It was strange that with "k/1" plot works fine but not with "k%1".
Pedro
On 9 Out, 15:19, Don Krug wrote:
> On Oct 4, 7:03 pm, jpc wrote
indeed, thankyou martin
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Hi Oscar,
In Sage 4.6 (currently 4.6alpha2) you will be able to do this using
differential forms:
sage: x, y, z = var('x, y, z')
sage: U = CoordinatePatch((x, y, z))
sage: F = DifferentialForms(U)
sage: f = F(x^2 + y + sin(z)); f
(x^2 + y + sin(z))
sage: g = f.diff(); g
cos(z)*dz + 2*x*dx + dy
When you know where the jump is you can use exclude:
f(x) = abs(x+1)
g = f.differentiate()
show(plot(g(x),(-2,2),exclude=[-1]), xmin = -2,xmax = 1,
ymin=-2,ymax=2)
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sage-support+u
What's easiest way to get Sage running on Windows for non-techie
students?
They'll be lost if the instructions are complicated.
Possible to wrap a VMWare + Ubuntu + Sage blob into one big Windows
exe file that requires no set up?
--
To post to this group, send email to sage-support@googlegroups
On Oct 8, 7:54 pm, Nils Bruin wrote:
> If you define x,y,z to be functions of m, it does what you want:
>
> sage: var("m")
> sage: x=function("x",m)
> sage: y=function("y",m)
> sage: z=function("z",m)
> sage: diff(f,m)
> cos(z(m))*D[0](z)(m) + 2*x(m)*D[0](x)(m) + D[0](y)(m)
Yes, but the point of
On Oct 4, 7:03 pm, jpc wrote:
> Why does the plot
> plot(k%1,k,0,5)
> is not produced but the following works:
> k=var('k')
> plot( k/1, k,0,5).show()
> print 1.9%1
>
> What can be used instead ?
I can't explain the behavior. but wouldn't plot(x-floor(x),0,5)
produce the same output?
On Saturday 09 October 2010, andrew ewart wrote:
> whats the best way to code the following
> I want a print out of a grobner basis for an ideal I generated by the
> polynomials
>
> this is respect to the reverse lexicographic and lexicographic order
sage: P. = PolynomialRing(QQ,order='neglex')
s
whats the best way to code the following
I want a print out of a grobner basis for an ideal I generated by the
polynomials
this is respect to the reverse lexicographic and lexicographic order
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