Thread: Matrix question...just a thought

I was wondering, how come when AX=0, A is equal to the identity matrix?

Originally Posted by buckaroobill

I was wondering, how come when AX=0, A is equal to the identity matrix?

You appear to be confused. If A is non singular AX=0 implies that X is the zero vector.

In general AX=0 means that X is in the null space of A, and may be non-zero if A is singular.

RonL