Suppose you had two vectors X and Y which are elements in in a n dimensional real space. Now why is |X+Y|<|X|+|Y|, i've been trying to understand spivak's proof but it boils down to why is |X||Y|>sum of(xy) where xy is the product of the individual components...(adsbygoogle = window.adsbygoogle || []).push({});

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# Damm Proofs

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