If $A= <4, 3 ,-1 >$ and $B= <9 ,7 ,6 >$ , what is $A*B -||A|| ||B||$ ?

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If $A= <4, 3 ,-1 >$ and $B= <9 ,7 ,6 >$ , what is $A*B -||A|| ||B||$ ?

1 Answer

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Answer 1 · 2016-11-08T18:57:21

$51-2root2(1079)$

Explanation:

The scalar product is $(4,3,-1)*(9,7,6)=4*9+3*7-1*6=51$
The lengths of A and B are
$A=root2(4^2+3^2+(-1)^2)=root2(26)$
$B=root2(9^2+7^2+6^2)=root2(166)$

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If $A= <4, 3 ,-1 >$ and $B= <9 ,7 ,6 >$ , what is $A*B -||A|| ||B||$ ?

1 Answer

Explanation:

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If A= <4, 3 ,-1 >A= <4, 3 ,-1 > and B= <9 ,7 ,6 >B= <9 ,7 ,6 >, what is A*B -||A|| ||B||A*B -||A|| ||B||?

1 Answer

Explanation:

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If $A= <4, 3 ,-1 >$ and $B= <9 ,7 ,6 >$ , what is $A*B -||A|| ||B||$ ?