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

यदि \(R\) में किन्हीं \(\alpha\) तथा \(\beta\) के लिए, निम्न तीन समतलों \(x+4 y-2 z=1\), \(x+7 y-5 z=\beta\), \(x+5 y+\alpha z=5\) का प्रतिच्छेदन, \(R ^{3}\) में एक रेखा है, तो \(\alpha+\beta\) का मान है 

  1. A \(10\)
  2. B \(-10\)
  3. C \(2\)
  4. D \(0\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(10\)

Step-by-step Solution

Detailed explanation

For planes to intersect on a line \(\Rightarrow\) there should be infinite solution of the given system of equations for infinite solutions…
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