WBJEE · Maths · Matrices
If \(P=\left[\begin{array}{lll}1 & 2 & 1 \\ 1 & 3 & 1\end{array}\right] Q=P P^{T}\), then the value of the
determinant of \(Q\) is
- A 2
- B -2
- C 1
- D 0
Answer & Solution
Correct Answer
(A) 2
Step-by-step Solution
Detailed explanation
Given, \(P=\left[\begin{array}{lll}1 & 2 & 1 \\ 1 & 3 & 1\end{array}\right]\)…
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