Prove that u v = 1/4 ||u + v||2 v||2 - 1/4 ||u - v||2.

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Prove that u ∙ v = 1/4 ||u + v||2 v||2 - 1/4 ||u - v||2.
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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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