40. If A is an n n idempotent matrix of rank k, show that [vec(A')]'[vec(A)] =...

Question:

40. If A is an n × n idempotent matrix of rank k, show that [vec(A')]'[vec(A)] = k.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: