CUET · MATHS · PYQ PAPER 2023
If \(A=\left[\begin{array}{cc}2-x & 1 \\ 3 & y+2\end{array}\right]\) and \(B=\left[\begin{array}{cc}y & 1 \\ 3 & 2 x+1\end{array}\right]\) are such that A = B, then values of z and y are respectively :
- A 1, 3
- B 3, 1
- C 2, 1
- D 1, 1
Answer & Solution
Correct Answer
(D) 1, 1
Step-by-step Solution
Detailed explanation
\(2-x = y\) \(y+2 = 2x+1\) \((2-x)+2 = 2x+1\) \(4-x = 2x+1\) \(3x = 3 \Rightarrow x=1\) \(y = 2-1 \Rightarrow y=1\) x=1, y=1
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