Question: Consider A (a) Show that A is not invertible by finding a nonzero 1 Ã 3 matrix Y such that YA = 0. [Row 3

Consider A

(a) Show that A is not invertible by finding a nonzero 1 Ã— 3 matrix Y such that YA = 0. [Row 3 of A equals 2(row 2) - 3 (row 1).]
(b) Show that B is not invertible. [Column 3 = 3(column 2) - column 1.]

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