A First Course in Linear Algebra · Problem RQ-RREF-1

Systems of Linear Equations — Robert Beezer

Mathematics — Linear Algebra · reduced-row-echelon-form-recognition

Problem

Is the matrix below in reduced row-echelon form? Why or why not?

\begin{bmatrix} 1 & 5 & 0 & 6 & 8 \\ 0 & 0 & 1 & 2 & 0 \\ 0 & 0 & 0 & 0 & 1 \end{bmatrix}