Why am I getting a zero determinant for the matrix:

-2 1 1 1 -2 1 1 1 -2

if the column or row vectors don't seem linearly dependant?

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- Jan 20th 2014, 10:25 AMparexVery basic question - It has to be...
Why am I getting a zero determinant for the matrix:

-2 1 1 1 -2 1 1 1 -2

if the column or row vectors don't seem linearly dependant? - Jan 20th 2014, 11:05 AMPlatoRe: Very basic question - It has to be...
- Jan 20th 2014, 11:15 AMebainesRe: Very basic question - It has to be...
Add the first row to the 2nd and you get -1 times the third row. So indeed they are not independent equations.

- Jan 20th 2014, 12:24 PMparexRe: Very basic question - It has to be...
... And it was.

Just lack of fluency with the application of linear algebra definitions...

Thank you!