Question: Consider the consistent m-by-n linear system [A|b], where RREF[A|b] has exactlyrpivots. What conditions is sufficient to gurantee that the linear system has a unique solution?

Consider the consistent m-by-n linear system [A|b], where RREF[A|b] has exactlyrpivots. What conditions is sufficient to gurantee that the linear system has a unique solution?

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