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Algèbre linéaire Exemples
[123-9]⎡⎢⎣123−9⎤⎥⎦
Étape 1
Write as an augmented matrix for Ax=0Ax=0.
[12030-90]⎡⎢
⎢⎣12030−90⎤⎥
⎥⎦
Étape 2
Étape 2.1
Multiply each element of R1R1 by 112112 to make the entry at 1,11,1 a 11.
Étape 2.1.1
Multiply each element of R1R1 by 112112 to make the entry at 1,11,1 a 11.
[121201230-90]⎡⎢
⎢⎣121201230−90⎤⎥
⎥⎦
Étape 2.1.2
Simplifiez R1R1.
[1030-90]⎡⎢
⎢⎣1030−90⎤⎥
⎥⎦
[1030-90]⎡⎢
⎢⎣1030−90⎤⎥
⎥⎦
Étape 2.2
Perform the row operation R2=R2-3R1R2=R2−3R1 to make the entry at 2,12,1 a 00.
Étape 2.2.1
Perform the row operation R2=R2-3R1R2=R2−3R1 to make the entry at 2,12,1 a 00.
[103-3⋅10-3⋅0-90]⎡⎢
⎢⎣103−3⋅10−3⋅0−90⎤⎥
⎥⎦
Étape 2.2.2
Simplifiez R2R2.
[1000-90]⎡⎢
⎢⎣1000−90⎤⎥
⎥⎦
[1000-90]⎡⎢
⎢⎣1000−90⎤⎥
⎥⎦
Étape 2.3
Perform the row operation R3=R3+9R1R3=R3+9R1 to make the entry at 3,13,1 a 00.
Étape 2.3.1
Perform the row operation R3=R3+9R1R3=R3+9R1 to make the entry at 3,13,1 a 00.
[1000-9+9⋅10+9⋅0]⎡⎢
⎢⎣1000−9+9⋅10+9⋅0⎤⎥
⎥⎦
Étape 2.3.2
Simplifiez R3R3.
[100000]⎡⎢
⎢⎣100000⎤⎥
⎥⎦
[100000]⎡⎢
⎢⎣100000⎤⎥
⎥⎦
[100000]⎡⎢
⎢⎣100000⎤⎥
⎥⎦
Étape 3
Use the result matrix to declare the final solution to the system of equations.
x=0x=0
0=00=0
0=00=0
Étape 4
Write a solution vector by solving in terms of the free variables in each row.
[x]=[0][x]=[0]
Étape 5
Write as a solution set.
{[0]}{[0]}