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Question
Transform `[(1, 2, 4),(3, -1, 5),(2, 4, 6)]` into an upper triangular matrix by using suitable row transformations
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Solution
Let A = `[(1, 2, 4),(3, -1, 5),(2, 4, 6)]`
Applying R2 → R2 – 3R1 and R3 → R3 – 2R1, we get
`[(1, 2, 4),(0, -7, -7),(0, 0, -2)]`
This is required upper triangular matrix.
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