Let M be a 3x3 matrix.
(4pts) For which matrix E will the transformation EM ( from M to EM) perform an exchange of the first and the third row?
(4pts) What about scaling the second row by a factor of r ?
(4pts) What about adding a times the first row to the third row?
(3pts) Can you describe the general forms of these matrices (that represent elementary row operations)?
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