Question

Let u = (1 , 1 , 0) , v = (0 , 1 , 0) and w = (-4 , -26 , -24) .

Evaluate the expression

|| 6u - 4v + w || =

Answer 1

fist scale the vetors, then add and subtract as needed ... then the length comes in

Answer 2

*first ...

Answer 3

6u = 6( 1, 1, 0 )
-4v = -4( 0, 1, 0 )
+w = (-4,-26,-24)


( 6, 6, 0 )
( 0, -4, 0 )
(-4,-26,-24)
-------------
(2, -24, -24) , then lengthify it

Answer 4

thanks.
the answer must bu in the form of ll6u-4v+wll

Answer 5

*but

Answer 6

ok. i got it.