Question

find x and y if x+y= (7,0,2,5) and x-y= (3,0,0,3).....its matrices ​

Answer 1

Answer:

X+Y=(7 0 2 5) X-Y= (3 0 0 3)

IN THE FORM OF MATRICES IT IS WRITTEN

AS,

X+Y=(7 0 X-Y=( 3 0

2 5) 0 3)

BY THE FORMULA IN MATRICES CHAPTER

(a b

c d) =ad-bc

Then,

X+Y=(7*5-2*0)=35 X-Y=(3*3-0*0)=9

X+Y=35 X-Y=9

BY SOLVING THOSE EQUATIONS WE GET

X=22, Y=13