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

જો સમીકરણ સંહિત \( 2 x+7 y+\lambda z=3 \) \( 3 x+2 y+5 z=4 \) \( x+\mu y+32 z=-1\) ને અસંખ્ય ઉકેલો હોય, તો \((\lambda-\mu)=\) ...........

  1. A \(38\)
  2. B \(39\)
  3. C \(34\)
  4. D \(15\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(38\)

Step-by-step Solution

Detailed explanation

\(\mathrm{D}=\mathrm{D}_1=\mathrm{D}_2=\mathrm{D}_3=0\) \(D_3=\left|\begin{array}{ccc}2 & 7 & 3 \\ 3 & 2 & 4 \\ 1 & \mu & -1\end{array}\right|=0 \Rightarrow \mu=-39\)…
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