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

यदि \(a, b, c\) शून्येतर वास्तविक संख्याएँ हैं तथा यदि समीकरण निकाय  \((a-1) x=y+z\); \((b-1) y=z+x\); \((c-1) z=x+y\) का एक अतुच्छ हल है, तो \(a b+b c+c a\) बराबर है

  1. A  \(a + b + c\)
  2. B \(abc\)
  3. C \(1\)
  4. D \(-1\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(abc\)

Step-by-step Solution

Detailed explanation

Given system of equationa be written as \(\left( {a - 1} \right)x - y - z = 0\) \( - x + \left( {b - 1} \right)y - z = 0\) \( - x - y + \left( {c - 1} \right)z = 0\) For non-trivial solution, we have…
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