Résolvez les équations suivantes dans ℝ3 :
-2x -y = 5;
-x -z = -1 et
y + 2z = 1.
S = {(-1; 2; -3)}.
S = {(2; -3; -1)}.
S = {(-1; -3; 2)}.
S = {(-3; -1; 2)}.
Résolvez les équations suivantes dans ℝ2 :
-x2 + y = 4 et x + 3y = 0.
S = (-12/7; 4/7)}.
S = (-12/7; -4/7)}.
S = (12/7; 4/7)}.
S = (12/7; -4/7)}.
x + y = -5 et x + 2y = 0.
S = {(-10; 5)}.
S = {(-10; -5)}.
S = {(10; -5)}.
10x + y = 3 et x + 2y = 5.
S = {(-1/19; -47/19)}.
S = {(1/19; 47/19)}.
S = {(-1/19; 47/19)}.
S = {(1/19; -47/19)}.
x + y + z = 1;
y - z = 0 et
x - y + z = -1.
S = {(1; -1; 1)}.
S = {(-1; 1; 1)}.
S = {(-2; 1; 1)}.
S = {(1; 1; -1)}.