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

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

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Answer 1 · 2016-04-19T11:20:57

$-69.39$

Explanation:

$A.B = 6.-4+ -4*-9 + -1.4=-24+36-4=8$
$||A||= sqrt (6^2+(-4)^2+ (-1)^2)=sqrt 53$
$||B||= sqrt ((-4)^2+(-9)^2+ 4^2)=sqrt 113$
$:.A.B-||A||||B||= 8-sqrt5989= -69.39$ [Ans]

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

1 Answer

Explanation:

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Science

Math

Humanities

... and beyond

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

1 Answer

Explanation:

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