Question: A square matrix P is called idempotent if P 2 = P. (a) Find all 2 2 idempotent upper triangular matrices. (b) Find all

A square matrix P is called idempotent if P2 = P. 

(a) Find all 2 × 2 idempotent upper triangular matrices. 

(b) Find all 2 × 2 idempotent matrices.

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ANSWER a Let P a b 0 d be a 2 2 idempotent upper triangular matrix Then we have P2 a b 0 d a ... View full answer

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