Question

Let u = <5, 6>, v = <-2, -6>. Find -2u + 5v.

<-20, -42>
<-20, 0>
<0, 18>
<-6, 0>

Answer 1

-2u you just multiply the components of u by -2
same for 5
and then add component by component

Answer 2

how so?

Answer 3

u = <5, 6>
-2*u = -2*<5, 6>
-2*u = <-2*5, -2*6> ... multiply EVERY component by -2
-2*u = <-10, -12>


use the same idea to find 5*v

Answer 4

is it the first one

Answer 5

what did you get for 5*v ?

Answer 6

-10,-30

Answer 7

correct

Answer 8

and you have the correct final answer

Answer 9

thanks

Answer 10

np