On Monday, November 26, 2012 2:34:21 PM UTC-5, Ken Levasseur wrote:
>
> I'm writing up some notes on matrices for my students and ran into this
> inconsistency (I think). I start by creating a matrix and augment its
> transpose, just to have a non-square matrix:
>
> A=Matrix([[3,1],[-1,2]])
>
On Mon, May 5, 2008 at 8:26 PM, Jerin Schneider
<[EMAIL PROTECTED]> wrote:
> It seems that every matrix I make is immutable. when I call
> matrix.immutable, it says it's not. But if I call matrix[3].immutable, it
> says it is immutable. So the matrix is not immutable, but the rows (or
> vectors) a
