So matrix A is

1 2 1 0

3 1 2 3

2 5 0 1

2 -1 1 3

how will i go able showing that this matrix ISNT invertible?

Printable View

- Apr 16th 2012, 08:37 AMBrennoxShow that a matrix ISNT invertible?
So matrix A is

1 2 1 0

3 1 2 3

2 5 0 1

2 -1 1 3

how will i go able showing that this matrix ISNT invertible? - Apr 16th 2012, 09:03 AMProve ItRe: Show that a matrix ISNT invertible?
A square matrix $\displaystyle \displaystyle \begin{align*} \mathbf{A} \end{align*}$ is only invertible if $\displaystyle \displaystyle \begin{align*} |\mathbf{A}| \neq 0 \end{align*}$, so to show that this matrix is NOT invertible, evaluate $\displaystyle \displaystyle \begin{align*} |\mathbf{A}| \end{align*}$ and show that it equals 0.

- Apr 16th 2012, 09:06 AMDaniielRe: Show that a matrix ISNT invertible?