Question: Find the inverse by the GaussJordan method, showing the details. In Prob. 12 Data from Prob. 12 Show the factorization and solve. 4x 1 +

Find the inverse by the Gauss–Jordan method, showing the details.

In Prob. 12

Data from Prob. 12

Show the factorization and solve.

4x1 + 2x2 + 4x3            =   20
2x1 + 2x2 + 3x3 + 2x4 =   36
4x1 + 3x2 + 6x3 + 3x4 =   60
2x2           + 3x3 + 9x4 = 122

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