- #1

qwerty11

- 39

- 0

## Homework Statement

Is the statement true or sometimes false. Justify your answer:

The determinant of a matrix is unchanged if the columns are written in reverse order.

## Homework Equations

## The Attempt at a Solution

I understand that the only thing that is changed is the sign (negative to positive or visa-versa), but do not understand the proof of how.