Question

resolva e classifique o sistema {x+y+z+2
{ y+z=-1
{ -2z=8 agora marque a alternativa correta
a. spd; S=( -3,-3,4)

b. spd; S= (3,3,-4)
c. spi S= {(3+2z,1-z,-z); z E 0}
d. spi S ={ (3-2z,-1-z,z); z E 0 }
e. spd S= (3,-3,4)

Answer 1

{-2z = 8
z = 8/-2 = -4

(- 4) x (- 2) = 8

{y + z = -1
y + (-4) = -1
y = -1 -(-4)
y = 3

3 - 4 = -1

x + y + z = 2
x + 3 + (-4) = 2
x = 2 - 3 + 4
x = 3

3 + 3 - 4 = 2

letra B

SPD