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Matrices and Determinants question

2024 · 8 Apr · Shift 2 · Q39

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JEE Main
Mathematics
Matrices and Determinants
2024 · 8 Apr · Shift 2 · Q39

Matrices and Determinants question

2024 · 8 Apr · Shift 2 · Q39

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1

If the system of equations

x+4 y-z=\lambda, 7 x+9 y+\mu z=-3,5 x+y+2 z=-1

has infinitely many solutions, then

(2 \mu+3 \lambda)

is equal to :

A
$-2$
B
2
C
3
D
$-3$

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