DeterminantHard

Question

The system of linear equations x + y + z = 2, 2x + y − z = 3, 3x + 2y + kz = 4 has a unique solution if-

Options

A.k ≠ 0
B.−1 < k > 1
C.−2 < k < 2
D.k = 0

Solution

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