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Matrices and Determinants question

2019 · 9 Apr · Shift 2 · Q42
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Matrices and Determinants question

2019 · 9 Apr · Shift 2 · Q42

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
If the system of equations 2x + 3y – z = 0, x + ky – 2z = 0 and 2x – y + z = 0 has a non-trival solution (x, y, z), then xy+yz+zx+k{x \over y} + {y \over z} + {z \over x} + kyx​+zy​+xz​+k is equal to :-
  1. A
    -4
  2. B
    34{3 \over 4}43​
  3. C
    12{1 \over 2}21​
  4. D
    −14-{1 \over 4}−41​
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