42. If A is an n x n symmetric idempotent matrix, show that $$_{i} _{j} a_{ij}^{2}$$ =...

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42. If A is an n x n symmetric idempotent matrix, show that

$$∑_{i} ∑_{j} a_{ij}^{2}$$ = rank (A).

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Matrices With Applications In Statistics

ISBN: 9780534980382

2nd Edition

Authors: Franklin A Graybill

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Question Posted: Sep 05, 2024 07:05 AM

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42. If A is an n x n symmetric idempotent matrix, show that $$_{i} _{j} a_{ij}^{2}$$ =...

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Matrices With Applications In Statistics

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