What is the dot product of $< 9, 4, 1 >$ $<9,4,1>$ and $< - 5, 1, 7 >$ $<-5,1,7 >$ ?

Question

What is the dot product of $< 9, 4, 1 >$ $<9,4,1>$ and $< - 5, 1, 7 >$ $<-5,1,7 >$ ?

1 Answer

Impact of this question

1143 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-02-05T19:47:53

$A . B = - 34$ $A.B=-34$

Explanation:

$A = (A_{i}, A_{j}, A_{k})$ $A=( A_i , A_j ,A_k)$
$B = (B_{i}, B_{j}, B_{k})$ $B=(B_i ,B_j ,B_k)$
$A . B = (A_{i} . B_{i} + A_{j} . B_{j} + A_{k} . B_{k})$ $A.B=(A_i.B_i + A_j.B_j +A_k.B_k)$
$A . B = (- 5.9 + 4.1 + 1.7)$ $A.B=(-5.9 +4.1 +1.7)$
$A . B = - 45 + 4 + 7$ $A.B=-45 + 4 +7$
$A . B = - 34$ $A.B=-34$

Science

Math

Humanities

... and beyond

What is the dot product of $< 9, 4, 1 >$ $<9,4,1>$ and $< - 5, 1, 7 >$ $<-5,1,7 >$ ?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

What is the dot product of <9,4,1><9,4,1> and <−5,1,7><-5,1,7 >?

1 Answer

Explanation:

Related questions

Impact of this question

What is the dot product of $< 9, 4, 1 >$ $<9,4,1>$ and $< - 5, 1, 7 >$ $<-5,1,7 >$ ?