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Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: simple vector question
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[Post New]19 Mar 2008 14:16:08 IST
    Subject: Re:simple vector question
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paddy.dude (1152)

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Olaaa!! Perrrfect answer. 174  [315 rates]
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| a-b |2 =(a-b).(a-b)
          =a.a-a.b-b.a+b.b
         =|a|2 +|b|2 -2a.b
         =4+9-8
         =5
|a-b|= 5
 
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