Question

How do you find a unit vector in the same direction of v= -2i + j? Also how do you find a unit vector in the opposite direction of w= 4i - 3j?

Answer 1

unit vector = vector / modulus of the vector

Answer 2

here the modulus id sqrt [(-2)^2 + 1^2]

Answer 3

* is

Answer 4

So it would be -2i/√5 + j/√5 ???

Answer 5

right

Answer 6

Now what about the opposite direction of w?

Answer 7

well i think the opposite direction is obtained by a change of sign
so that would be - 4i + 3j
Now find the unit vector as above.

Answer 8

- its been a long time since i did these but I think i'm correct.

Answer 9

It's ok thank you

Answer 10

yw