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

यदि रैखिक समीकरण निकाय \(x-4 y+7 z=g\), \(3 y-5 z=h\), \(-2 x+5 y-9 z=k\) संगत (consistent) है, तो 

  1. A \(g+h+k=0\)
  2. B \(2g+h+k=0\)
  3. C \(g+h+2k=0\)
  4. D \(g+2h+k=0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(2g+h+k=0\)

Step-by-step Solution

Detailed explanation

\({P_1} = x - 4y + 7z - g = 0\) \({P_2} = 3x - 5y - h = 0\) \({P_3} = - 2x + 5y - 9z - k = 0\) Here \(\Delta = 0\) \(2{P_1} + {P_2} + {P_3} = 0\) when \(2g + h + k = 0\)
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