Prove: For arbitrary vectors u and v, (a) |u + v| 2 + |u - v| 2
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Prove: For arbitrary vectors u and v,
(a) |u + v|2 + |u - v|2 = 2|u|2 + 2|v|2;
(b) |u + v|2 - |u - v|2 = 4u . v.
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Related Book For
Differential Equations And Linear Algebra
ISBN: 9780134497181
4th Edition
Authors: C. Edwards, David Penney, David Calvis
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