aleen8942 aleen8942
  • 25-03-2020
  • Mathematics
contestada

If v = 5i + 4j and w = 6i – 9j, find each of the following vectors:
a. v + w
b. V – w.

Respuesta :

adebayodeborah8
adebayodeborah8 adebayodeborah8
  • 25-03-2020

Answer:

a. = 11i - 5j

b. = -i + 13j

Step-by-step explanation:

from the question we were given

v = 5i + 4j

w = 6i - 9j

we are to find

a. v + w

b. v - w

a)  v + w

(5i + 4j )+ (6i - 9j)

5i + 4j + 6i - 9j

collect the like terms

11i - 5j

b) v - w

(5i + 4j) -( 6i - 9j)

5i + 4j -6i + 9j

collect the like terms

5i - 6i  +4j + 9j

-i + 13j

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