Question

Determine a, b, x e y, tais que:
[a+b x+y a-b 2x-y] = [3 2 1 1]​

Answer 1

Resposta:

a+b=3

a-b=1

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2a=4

a=4/2

a=2

2+b=3

b=3-2

b= 1

S={(2,1)}

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x+y=2

2x-y=1

3x= 3

x= 3/3

x= 1

1+y= 2

y= 2-1

y= 1

S={(1,1)}