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Vectors

RISHIPRATIM MAZUMDAR's Avatar
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Joined: 16 Jul 2007
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26 Mar 2008 23:29:26 IST
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pls solve this
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if a,b,c are 3 non collinear unit vectors,and a+2b+3c is collinear with b+c and a+2b is collinear with b-c,then find the value of 2a.b+6a.c+3b.c


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RISHIPRATIM MAZUMDAR's Avatar

Blazing goIITian

Joined: 16 Jul 2007
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26 Mar 2008 23:38:48 IST
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pls answr sum1....
Nadeem's Avatar

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Joined: 25 Aug 2007
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26 Mar 2008 23:40:16 IST
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a+2b is collinear with b-y???

what's 'y' here?
RISHIPRATIM MAZUMDAR's Avatar

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Joined: 16 Jul 2007
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26 Mar 2008 23:45:14 IST
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edited...
pls see nw.



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