Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If P is a 3 x3 matrix such that `P^T=2P+I`, where `P^T` is the transpose of P andI is the 3 x 3 identity matrix, then there exists a column matrix `X= [[x],[y],[z]] !=[[0],[0],[0]]` such that - Sarthaks eConnect
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If P is a 3 x3 matrix such that `P^T=2P+I`, where `P^T` is the transpose of P and  I is the 3 x 3 identity matrix, then there exists a column matrix `X= [[x],[y],[z]] !=[[0],[0],[0]]` such that

A.

PX=`[[0],[0],[0]]`

B.

PX=X

C.

PX=2X

D.

PX=-X