Comments | weenstar: (без темы)

weenstar

May 12, 2006 10:05

I feel like an idiot cos I didn't take 2nd year linear algebra.

What is the Trace of a matrix??

Comments 4

annie_lyne May 11 2006, 12:51:17 UTC

The trace of a matrix is the sum of its diagonal entries. If $A = (a_{ij})$, $tr A = \sum_i a_{ii}$.

weenstar May 11 2006, 14:03:47 UTC

Many thanks :) I was hoping you would read this entry!!!

annie_lyne May 11 2006, 14:32:46 UTC

hehe

lozza1402 May 13 2006, 07:06:34 UTC

wow its like a whole other language... i fell like an idiot!!!