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

ધારો કે \(A\) એ એવો સંમિત શ્રેણિક છે કે જેથી \(| A |=2\) અને \(\left[\begin{array}{ll}2 & 1 \\ 3 & \frac{3}{2}\end{array}\right] \cdot A=\left[\begin{array}{ll}1 & 2 \\ \alpha & \beta\end{array}\right]\).જો \(A\) ના વિકર્ણી ઘટકોનો સરવાળો \(s\) હોય તો, \(\frac{\beta s}{\alpha^2}=...........\)

  1. A \(5\)
  2. B \(6\)
  3. C \(7\)
  4. D \(8\)
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Answer & Solution

Correct Answer

(A) \(5\)

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Detailed explanation

\(\left[\begin{array}{ll}2 & 1 \\3 & \frac{3}{2}\end{array}\right]\left[\begin{array}{ll} a & b \\b & c\end{array}\right]=\left[\begin{array}{ll}1 & 2 \\\alpha & \beta\end{array}\right]\) Now \(a c-b^2=2\) and \(2 a+b=1\) and \(2 b + c =2\) solving all these above equations we…
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