- #1

emilieloops

- 2

- 0

## Homework Statement

Under what condition will the following system have a unique solution?

x -y +2z = 1

ax -ay +4z = 2a

x +y +az = 4

Note: a is a parameter.

## The Attempt at a Solution

I know I'm supposed to solve by turning this into the identity matrix by I really have no idea where to start. Hellp would be much appreciated.