Question

aflati vectorul x in functie de vectorii a si b​

Answer 1

Răspuns:

a)3a+2(b-x)=4(2a-b)

3a+2b-2x=8a-4b

3a+2b-8a+4b=2x

-5a+6b=2x

x=-5a/2+6b/2

x= -5a+3b

___________________________

b)2(x-2a)+3(2b-x)=5b-6a

2x-4a+6b-3x=5b-6a

-x=5b-6a+4a-6b

-x=-2a-b║·(-1)

x=2a+b

Explicație pas cu pas: