A vector with ||v|| = 1 is known as a unit vector. Prove that if v. w

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A vector with ||v|| = 1 is known as a unit vector. Prove that if v. w are both unit vectors, then v + w and v - w are orthogonal. Are they also unit vectors?
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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