sign up I login
 advanced
refer a friend - earn nickels!!

Ask & Discuss Questions with Community & Experts

 Moderation Team
 90 chars left    advanced
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?
Forum Index -> Vectors like the article? email it to a friend.  
Author Message
[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?
[Up] View Post
gaurav_2351 (8)

New kid on the Block

Olaaa!! Perrrfect answer. 0  [4 rates]
gaurav_2351's Avatar
total posts: 22    
offline Offline
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?
[Up] View Post
layman (148)

Hot goIITian

Olaaa!! Perrrfect answer. 24  [38 rates]
layman's Avatar
total posts: 123    
offline Offline
Associative and commutative laws holds good.


 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
hash_include (381)

Scorching goIITian

Olaaa!! Perrrfect answer. 59  [102 rates]
hash_include's Avatar
total posts: 203    
offline Offline
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..
JEE and OLYMPIA INFINATUM
http://iit-redefined.theforum.name/index.php

join the revolution!!
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
layman (148)

Hot goIITian

Olaaa!! Perrrfect answer. 24  [38 rates]
layman's Avatar
total posts: 123    
offline Offline
Hey shrids that's what I meant.


 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
KEERU (45)

New kid on the Block

Olaaa!! Perrrfect answer. 7  [12 rates]
KEERU's Avatar
total posts: 28    
offline Offline
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
 this reply: 10 points  (with 2 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
KEERU (45)

New kid on the Block

Olaaa!! Perrrfect answer. 7  [12 rates]
KEERU's Avatar
total posts: 28    
offline Offline
correct me if i'm wrong!
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
layman (148)

Hot goIITian

Olaaa!! Perrrfect answer. 24  [38 rates]
layman's Avatar
total posts: 123    
offline Offline
Yes correct.


 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
eistien (343)

Blazing goIITian

Olaaa!! Perrrfect answer. 53  [92 rates]
eistien's Avatar
total posts: 447    
offline Offline
how can (b.c).a even exist or be a legal expression???the statement is wrong!!!!
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
varshavallig (800)

Blazing goIITian

Olaaa!! Perrrfect answer. 136  [196 rates]
varshavallig's Avatar
total posts: 511    
offline Offline
yes how can u have a dot product between a scalar and a vector,its just normal multipication.
!!!!!!!!!!!
Varsha
be cool,
tomorrow is what we make it today,
so if u can dream it , u can make it .
life is an ice cream ,eat it before it melts away!!!!!!!!!
varsha

SmileyCentral.com




 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
ashgirl (1434)

Blazing goIITian

Olaaa!! Perrrfect answer. 240  [357 rates]
ashgirl's Avatar
total posts: 1524    
offline Offline
but even if it is normal multiplication, can it exist??
Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.


Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
computer001 (1849)

Blazing goIITian

Olaaa!! Perrrfect answer. 297  [479 rates]
computer001's Avatar
total posts: 1451    
offline Offline
in vectors there are 2 multiplications '.' and 'x'
wat do u mean by 'normal' multiplication???
pls make ur question clear
Nitwit Blubber Odment Tweak
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
spideyunlimited (4185)

Moderator

Olaaa!! Perrrfect answer. 699  [1044 rates]
spideyunlimited's Avatar
total posts: 3096    
offline Offline
i think she means n times magnitude into a vector.
a vector
3a vector etc.
jus telling u wht i think she meant
---------------------------------------------------------------

- Gaurav Ragtah (spideyunlimited)
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
bhartibhanushali (249)

Blazing goIITian

Olaaa!! Perrrfect answer. 39  [66 rates]
bhartibhanushali's Avatar
total posts: 504    
offline Offline
(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
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post
computer001 (1849)

Blazing goIITian

Olaaa!! Perrrfect answer. 297  [479 rates]
computer001's Avatar
total posts: 1451    
offline Offline
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
Nitwit Blubber Odment Tweak
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[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?
[Up] View Post