IIT JAM Follow
January 4, 2022 5:11 pm 30 pts
68. Let P be a n xn matrix with integral entries and Q=P+, where I denote the nxn identity matrix. Then Q is (a) ldempotent, i.e. Q =Q (b) Invertible (c) Unipotent, i.e., Q-1 is nilpotent (d) Nilpotent (GATE 2004)
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• Pranav kumar
please see the attachment, Option b is correct.