Hello. I was just wondering if there is some sort of shortcut procedure that
you use when multiplying out matrices. My professor has mentioned something
about lamba, lamba prime? I'm pretty much lost on the subject.
Here's an example:
We want to find (x'x)^-1 (x-prime x inverse)
X is given as [1 24
[1 22
[1 15
[1 15
[1 17
[1 18
[1 24
[1 22
[1 10
[1 21
[1 15
[1 20
So, the transpose of x, x' is [1 1 1 1 1 1 1 1 1 1 1 1
[24 22 15 15 17 18 24 22 10 21 15 20
Now, I know I have to find the product of x and x'. My question is, is there a
quicker way to do this then the standard way? It is quite time consuming to
do, especially given the time constraints of an exam
=================================================================
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
http://jse.stat.ncsu.edu/
=================================================================
