Recent content by emilieloops

Can I ignore the right side of all the equations in order to find the inverse?

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...