MathematicsMedium244×since 2002Q4537If PPP is a 3×33 \times 33×3 real matrix such that PT=aP+(a−1)IP^T=a P+(a-1) IPT=aP+(a−1)I, where a>1a>1a>1, then :A∣AdjP∣=1|A d j P|=1∣AdjP∣=1B∣AdjP∣>1|A d j P|>1∣AdjP∣>1C∣AdjP∣=12|A d j P|=\frac{1}{2}∣AdjP∣=21DPPP is a singular matrixCheck answerSkip