Question

Let u = <-5, -9>, v = <6, 8>. Find -8u - 2v.
HELP!!!

Answer 1

-8u-2v=-8<-5,-9>-2<6,8>

Answer 2

A property of vectors:
a<b,c>=<ab,ac>

Answer 3

From the stuff I have given you, can you solve it now? Or do you not understand what i'm on about?

Answer 4

So its kinda like distributive property

Answer 5

I don't get how to solve it lol

Answer 6

a<b,c>=<ab,ac>
means the components of <b,c> are each going to be multiplied by a
ab means a times b
ac means a times c

Answer 7

For example, 5<4,6>=<4*5,6*5>=<20,30>

Answer 8

Also, another property of vectors you need is this:
<a,b>+<c,d>=<a+c,b+d>
So for example:
<1,2>+<3,4>=<1+3,2+4>=<4,6>

Answer 9

thank you my good people