Question

Let u = <9, 4>, v = <-2, 5>. Find u + v.

Answer 1

<13, 3>

<14, 2>

<7, 9>

<11, -1>

Answer 2

Just add the coordinate together! < 9-2, 4+5 >

Answer 3

7,9?

Answer 4

Yes, it's plain addition :) <7, 9>
Learn to right the correct notation, though!

Answer 5

*write

Answer 6

what about Let u = <-4, -3>. Find the unit vector in the direction of u, and write your answer in component form.
?

Answer 7

@Chlorophyll

Answer 8

u=-4i-3j >> unit vector can be divided by its magnitud like
u=(-4/5)i+(-3/5)j, the magnitud is sqrt of 4^2+3^2

Answer 9

answer is a ^^

Answer 10

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

<52, 88>

<-8, 2>

<112, -28>

<28, 56>

Answer 11

u = <-5, -9>, v = <6, 8>. Find -8u - 2v
Same as what chloro has mentioned.
But this time multiply u by 8 and v by 2 first before subtracting

Answer 12

<40,72> - <12,16> = <28,56>

Answer 13

write as P=<5,1>, Q=<13,8>
for vector PQ do Q-P try it bud ^^

Answer 14

8, 7?

Answer 15

well, the magnitude ??

Answer 16

im confused? i did 13-5 and got 8. and 8-1 and got 7.

Answer 17

sure ??

Answer 18

i dont understand how to get the answer.

Answer 19

I drew the wrong sign it must be (.., ..) not < , >