Question: Suppose B is obtained from A by: (a) Interchanging rows i and j; (b) Multiplying row i by & k 0; (c) Adding k

Suppose B is obtained from A by:
(a) Interchanging rows i and j;
(b) Multiplying row i by & k ≠ 0;
(c) Adding k times row i to row j (i ≠ j).
In each case describe how to obtain B-1 from A-1.

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