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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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[Post New]27 Mar 2008 12:30:06 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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gaurav_2351 (8)

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if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
    
[Post New]27 Mar 2008 12:31:51 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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layman (148)

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Associative and commutative laws holds good.


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[Post New]27 Mar 2008 12:32:12 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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hash_include (381)

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it doesnt imply anything. this is just a combination of associative law and commutative law for dot droduct of vectors, which is ALWAYS true..
so a,b,c can be any 3 vectors..
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[Post New]27 Mar 2008 12:35:40 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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layman (148)

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Hey shrids that's what I meant.


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[Post New]27 Mar 2008 12:39:07 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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KEERU (45)

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the associative law for dot product does not exist
as b.c would be a scalar(d) and the dot product of a scalar with a vector is not defined
thus d.a is not defined
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[Post New]27 Mar 2008 12:40:28 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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KEERU (45)

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correct me if i'm wrong!
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[Post New]27 Mar 2008 12:42:28 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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layman (148)

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Yes correct.


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[Post New]27 Mar 2008 15:03:57 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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eistien (343)

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how can (b.c).a even exist or be a legal expression???the statement is wrong!!!!
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[Post New]27 Mar 2008 17:20:58 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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varshavallig (798)

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yes how can u have a dot product between a scalar and a vector,its just normal multipication.
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[Post New]27 Mar 2008 19:12:58 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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ashgirl (1434)

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but even if it is normal multiplication, can it exist??
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[Post New]27 Mar 2008 19:21:04 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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computer001 (1847)

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in vectors there are 2 multiplications '.' and 'x'
wat do u mean by 'normal' multiplication???
pls make ur question clear
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[Post New]27 Mar 2008 19:28:51 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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spideyunlimited (3467)

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i think she means n times magnitude into a vector.
a vector
3a vector etc.
jus telling u wht i think she meant
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[Post New]27 Mar 2008 20:08:11 IST
    Subject: if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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bhartibhanushali (249)

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(a.b).c =(abcosQ).c=abcosQ ccosQ'
so why all are saying it does not exist

correct me if i m wrong or rate me if useful
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[Post New]27 Mar 2008 20:13:44 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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computer001 (1847)

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a.b is a scalar..
dot product of 2 vectors is a scalar
u cannot take the 2nd dot pdt as it will then amt to dot pdt between a scalar and a vector
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[Post New]27 Mar 2008 20:16:02 IST
    Subject: Re:if a b c are 3 vectors such that (b.c).a=(a.b).c . what does this imply?
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spearhead121 (74)

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