Prove Lagrange's Identity, ||u v||2 = ||u||2||v||2 - (u v)2
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||u × v||2 = ||u||2||v||2 - (u × v)2
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Let u u 1 u 2 u 3 and v v 1 v 2 v 3 then u v u 2 v 3 u 3 v 2 u 3 v ...View the full answer
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