Prove the following: (a) P(7) is the identity matrix if and only if 1 = id¡n]- (b) P(T πι) Ρ(π>) P (πι) for each π, T S. (c) P(7)-1 = P(1) = P(7)*. We might say that P(7) is orthogonal since P(7) = = P(r)-1.

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Chapter2: Second-order Linear Odes
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5. Prove the following:
(a) P(T) is the identity matrix if and only if = id¡n]-
(b) P(T2 0 11) = P(T2)P(T1) for each 71, T2 E Sn.
%3D
(c) P(T)-1 = P(T-1) = P(r)*.
We might say that P(T) is orthogonal since P(7)' = P(n)-1.
Transcribed Image Text:5. Prove the following: (a) P(T) is the identity matrix if and only if = id¡n]- (b) P(T2 0 11) = P(T2)P(T1) for each 71, T2 E Sn. %3D (c) P(T)-1 = P(T-1) = P(r)*. We might say that P(T) is orthogonal since P(7)' = P(n)-1.
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