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+1 vote
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in Matrices by (48.1k points)
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The matrix \(\begin{bmatrix}\lambda & - 1 & 4 \\ - 3& 0& 1\\ - 1& 1 &2 \end{bmatrix}\) is invertible if

(a) l ≠ -20

(b) l ≠ –19

(c) l ≠ –18

(d) l ≠ –17

1 Answer

+1 vote
by (49.2k points)
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Best answer

Correct option is (d) l ≠ –17

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