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![[Post New]](/templates/default/images/icon_minipost_new.gif) 8 Jun 2008 14:43:46 IST
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if vecP+vecQ=vecR & vecP-vecQ=vecS,prove |R*R| +|S*S|=2(P*P+Q*Q)
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8 Jun 2008 15:12:53 IST
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If * denotes dot product then IP+QI2+IP-QI2=2(P2+Q2)=2(P*P+Q*Q).
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MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC. |
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8 Jun 2008 17:03:53 IST
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P*P denotes square of P
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9 Jun 2008 10:55:12 IST
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Understand that dot product of two identical is square of itself only.That is a.a=a2.
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MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC. |
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