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