Let A be an arbitrary projection matrix. Show that C(J - A) = C(A') 1. . Hints:

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Let A be an arbitrary projection matrix. Show that C(J - A) = C(A') 1. .

Hints: Recall that C(A')l. is the null space of A. Show that (J - A) is a projection matrix.

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Let A be an arbitrary projection matrix. Show that C(J - A) = C(A') 1. . Hints:

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