# Thread: What on earth does K mean?

1. ## What on earth does K mean?

Hi guys, I am a first year university student and busy with linear Algebra. Can anyone explain to me what on earth K is?

To give an example I saw some true and false exercises that say:

100
0k0 is an elementary matrix for all values of k.
001

and

k is any real number

I went through my textbook and google it but for some reason I just cant get an answer, can anyone please give some clarity on what k is?

Kind Regards
Hyperion

2. ## Re: What on earth does K mean?

Originally Posted by Hyperion
Hi guys, I am a first year university student and busy with linear Algebra. Can anyone explain to me what on earth K is?

To give an example I saw some true and false exercises that say:

100
0k0 is an elementary matrix for all values of k.
001

and

k is any real number

I went through my textbook and google it but for some reason I just cant get an answer, can anyone please give some clarity on what k is?

Kind Regards
Hyperion
k is just a variable here. They ask if you the matrix shown is elementary for all values of k.

http://en.wikipedia.org/wiki/Elementary_matrix

3. ## Re: What on earth does K mean?

oh ok, I thought it was something special or mystical lol

Thanks very much

4. ## Re: What on earth does K mean?

Originally Posted by Hyperion
oh ok, I thought it was something special or mystical lol

Thanks very much
nah, the mystical and special numbers don't come til 2nd yr!