STEM Lessons for College Students

Row reduction algorithm II | Linear Algebra MATH1141 | N J Wildberger

We describe the second half of the row reduction algorithm: to go from a matrix in row echelon form to one in reduced row echelon form. This is a matrix equivalent of the naive high school method of back-substitution: evaluating the variables one at a time, starting with the last one, and successively substituting into the next equation.

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