danik_ejik
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Hello,
I need a hint on how to begin this proof, please.
Prove that if A is a projection matrix, A2=A, then I + A is invertible and
(I + A) -1 = I - \frac{1}{2}A.
I need a hint on how to begin this proof, please.
Prove that if A is a projection matrix, A2=A, then I + A is invertible and
(I + A) -1 = I - \frac{1}{2}A.