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JEE Mains · Maths · STD 12 - 3 and 4 . metrices and determinant

यदि रैखिक समीकरण निकाय \(x+k y+3 z=0\),\(3 x+k y-2 z=0\),\(2 x+4 y-3 z=0\) का एक शून्येतर हल \((x, y, z)\) है, तो \(\frac{x z}{y^{2}}\) बराबर है

  1. A \(10\)
  2. B \(-30\)
  3. C \(30\)
  4. D \(-10\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(10\)

Step-by-step Solution

Detailed explanation

For non zero solution of the system of linear equation; \(\left| {\begin{array}{*{20}{c}} 1&k&3\\ 3&k&{ - 2}\\ 2&4&{ - 3} \end{array}} \right| = 0\) \( \Rightarrow k = 11\) Now equations become \(x+11y+3z=0\) ......\((1)\) \(3x+11y-2z=0\) ......\((2)\) \(2x+4y-3z=0\)…
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