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Pre-class quiz (three questions) on determining the solution set of a linear system, given an augmented matrix in row-echelon or reduced row-echelon form. To be completed by students after having watched a pre-class video on the topic.
Example of solving a 3-by-3 homogeneous system of linear equations by row-reducing the augmented matrix, in the case of infinitely many solutions math.la.e.linsys.3x3.soln.homog.row_reduce.i