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Question
Apply the given elementary transformation of the following matrix.
A = `[(1,-1,3),(2,1,0),(3,3,1)]`, 3R3 and then C3 + 2C2
Solution
A = `[(1,-1,3),(2,1,0),(3,3,1)]`
By 3R3, we get,
A ∼ `[(1,-1,3),(2,1,0),(9,9,3)]`
C3 → C3 + 2C2, we get,
A ∼ `[(1,-1,3+2(-1)),(2,1,0 +2(1)),(9,9,3 +2(9))]`
∴ A ∼ `[(1,-1,1),(2,1,2),(9,9,21)]`
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