1.If P=[121131]P = \begin{bmatrix} 1 & 2 & 1 \\ 1 & 3 & 1 \end{bmatrix}P=[112311], Q=PPTQ = PP^TQ=PPT, then ∣Q∣=|Q| =∣Q∣=a.222b.−2-2−2c.111d.000Login to continueOnly logged in users canattempt or see the solution.
