The system of equations x+y+z=6, x+2y+3z=10, x+2y+λz=k is inconsistent if λ=.... , k≠....
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a
3, 7
b
3, 10
c
7, 10
d
10, 3
answer is B.
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Detailed Solution
Augment Matrix AD =11161231012λk Apply: R2→R2−R1;R3→R3−R1 ~1116012401λ−1k−6 Apply :R3→R3−R2 ~1116012400λ−3k−10The system is inconsistent, if λ−3=0 , k−10≠0⇒ λ=3 , k≠10