Question: Is the inverse of a triangular matrix always triangular (as in Prob. 5)? Give reason. Data from Prob. 5 Find the inverse by GaussJordan (or

Is the inverse of a triangular matrix always triangular (as in Prob. 5)? Give reason.

Data from Prob. 5

Find the inverse by Gauss–Jordan (or by (4*) if n = 2). Check by using (1).

Is the inverse of a triangular matrix always triangular (as in Prob.

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