Let A have a row all of whose entries are zero. (a) Explain why the product AB

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Let A have a row all of whose entries are zero.
(a) Explain why the product AB also has a zero row.
(b) Find an example where BA does not have a zero row.
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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