Відповідь:
det(A - λE) = 0
A = [2, -3, 4],
[5, 6, -7],
[8, -9, 10]
det(A) = 2610 + 378 + 459 - 864 - 972 - 1053 = 240
(2-λ)(6-λ)(10-λ) + 21(λ-2)(λ-4) - 30(λ-2)(λ-3) - 56(λ-3)(λ-4) = 0
λ1 = 11
λ2 = 3
λ3 = 4
(A - λE)v = 0
Для λ1 = 11:
(2-11)x - 3y + 4z = 0
5x + (6-11)y - 7z = 0
8x - 9y + (10-11)z = 0
(3/2)y - 2z/3 + (6/5)y - (7/5)z = 0
4y - (11/2)z + (16/3)y - 6z = 0
y = 2z/5
x = 3y/2 - 2z/3 = 6z/5
v1 = [6z/5, 2z/5, z]
Для λ2 = 3:
v2 = [-2, 1, 0]
Для λ3 = 4:
v3 = [1, 0, 1]
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Answers & Comments
Відповідь:
det(A - λE) = 0
A = [2, -3, 4],
[5, 6, -7],
[8, -9, 10]
det(A) = 2610 + 378 + 459 - 864 - 972 - 1053 = 240
(2-λ)(6-λ)(10-λ) + 21(λ-2)(λ-4) - 30(λ-2)(λ-3) - 56(λ-3)(λ-4) = 0
λ1 = 11
λ2 = 3
λ3 = 4
(A - λE)v = 0
Для λ1 = 11:
(2-11)x - 3y + 4z = 0
5x + (6-11)y - 7z = 0
8x - 9y + (10-11)z = 0
(3/2)y - 2z/3 + (6/5)y - (7/5)z = 0
4y - (11/2)z + (16/3)y - 6z = 0
y = 2z/5
x = 3y/2 - 2z/3 = 6z/5
v1 = [6z/5, 2z/5, z]
Для λ2 = 3:
v2 = [-2, 1, 0]
Для λ3 = 4:
v3 = [1, 0, 1]