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

Question

1816 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-04T11:19:10

$< - 1, 4, 7 > \cdot < 9, - 7, 5 > = 26$ $<-1,4,7>*<9,-7,5> =26$

enter image source here
$< - 1, 4, 7 > \cdot < 9, - 7, 5 > = 26$ $<-1,4,7>*<9,-7,5> =26$

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