Question
Show that the following are equivalent for matrices P, Q: (1) P, Q, and P + Q are all invertible and (P + Q)-1 =
Show that the following are equivalent for matrices P, Q:
(1) P, Q, and P + Q are all invertible and (P + Q)-1 = P-1 + Q-1.
(2) P is invertible and Q = PG where G2 + G + I = 0.
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Principles of Communications Systems, Modulation and Noise
Authors: Rodger E. Ziemer, William H. Tranter
7th edition
978-1-118-0789, 1118078918, 978-8126556793
