On Feb 28, 5:44 am, Marshall Hampton wrote:
> I'm not sure this is the best answer, but you could do:
>
> A = matrix(SR,[[a,b],[c,d]])
> v1,v2 = A.eigenvalues()
> show((A-v1).left_kernel().basis()[0])
> show((A-v2).left_kernel().basis()[0])
>
> Perhaps part of the issue is that these do not have
Dear all,
I try to find the eigenvectors of a general 2x2 matrix using
var('a,b,c,d');show(Matrix(2,2,[a,b,c,d]).eigenvalues());
show(Matrix([[a,b],[c,d]]).eigenvectors_left())
The eigenvalues are ok, but I get an error for the eigenvectors.
What am I doing wrong here ?
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dear all,
I try to install sage on a intel mac running osx 10.4.11. I didn't
find a binary for 10.4 on the website although it is stated that 10.4
is supported. So I tried with the disk image sage-4.3.3-OSX-32bit-10.5-
i386-Darwin.dmg
I followed the install instructions but when I try to start sa
t(1-k^2)))/(1-jacobi("dn",u,k)^2*jacobi("sn",v,sqrt(1-k^2))^2)
> :
> sage: resn(1,1,1)
> tanh(1)/(1 - sech(1)^2*sin(1)^2)
> sage: resn(1.0,1.0,1.0)
> 1.083923327338695
>
> ++
>
> On 9/29/07, harven <[EMAIL PR
hi,
It seems that the jacobi sn function takes only real arguments.
I am trying to define a substitute taking a complex argument
using a standard formula:
var('u,v,k');
resn=(jacobi("sn",u,k)*jacobi("dn",v,sqrt(1-k^2)))/(1-
jacobi("dn",u,k)^2*jacobi("sn",v,sqrt(1-k^2))^2)
Unfortunately, sa
It works, thank you a lot!
Harven
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Hi,
I am trying to use the 2.7.3 version of sage on a
apple MacBookPro intel with MacOSX 2.4.10.
I am using the binary found at:
http://www.sagemath.org/SAGEbin/apple_osx/intel/
Everything starts fine, but
I get an error whenever a computation needs to start maxima,
e.g. RR(sqrt(2)). The
,
harven
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