Question

DOT PRODUCT HELP,
let u 2, 1, v 4, 2, and w 1, 3 be
vectors. Find the indicated expression.
1. WHAT IS 2U-3W

Answer 1

Ok so far i have 2,1 x 2 and 1,3x3
then it would be U(4,2) w(3,9) Now this is where I'm stuck

Answer 2

2U is just a scalar multiplication
3W same as above

and 2U - 3W is just an addition operation

Answer 3

remembered taking linear algebra last semester :D was fun

Answer 4

Scalar multipication? i will have to google that

Answer 5

eh? google? I'd think you've covered that, should be in the 1st section of vectors

Answer 6

Yes we did i just constantly forget my definitions

Answer 7

Ok i got it so basically its awlays the same amount just like a graph

Answer 8

scalar a number that amplifies another number

Answer 9

So which part would i subtract do i still have to do u1-w1 and u2-w2 and that would be it?

Answer 10

yeap

Answer 11

Lol okay i knew it was easy, sorry just checking cs i have a test tommorow

Answer 12

Thanks

Answer 13

yw