In Exercises 21 and 22, mark each statement True or False. Justify each answer.4 a. The echelon form of a matrix is unique. b. The pivot positions in a matrix depend on whether row interchanges are used in the row reduction process. c. Reducing a matrix to echelon form is called the forward phase of the row reduction process. d. Whenever a system has free variables, the solution set contains many solutions. e. A general solution of a system is an explicit description of all solutions of the system.

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Q: course: Matrix Method

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Q: The augmented matrix of a linear system has been reduced by row operations to the form shown.…

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Q: The augmented matrix of a linear system has been reduced by row operations to the form shown.…

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