Question

I really need help with Linear algebra vector addition and subtraction

Answer 1

@amistre64

Answer 2

im u and v are in standard postion (start at 0) and therefore the tip is the other end

Answer 3

how do we find midpoints?

Answer 4

(u+v)/2

(u+u+v)/2

Answer 5

subtract the tail to get it to 0

(2u+v)/2 - (u+v)/2

(2u+v-v-u)/2

u/2

Answer 6

sorry my internet died on me

Answer 7

does the general approach there make sense?

Answer 8

uh r u first trying to solve for the head cordinates of W or tail?

Answer 9

tail is the midpoint of u and v

head is the other one

Answer 10

the generalization lets us work the process without having to do the numbers till the end

Answer 11

okay so to find the midpoint of u and v we add the two vectors and divide by two correct?

Answer 12

yes

Answer 13

tail = (u+v)/2
head = (u+u+v)/2

subtract the tail get the tail to 0

w = head - tail = u/2

Answer 14

Can you help me visualize this?

Answer 15

visualization is a crutch ...