Problem 6. S in the form S = {x | Ax≤ b, Fx = g}. Which of the following sets S are polyhedra? If possible, express (a) S = {y₁a₁ + y2a2 | −1 ≤ Y₁ ≤ 1, − 1 ≤ y₂ ≤ 1}, where a₁, a2 € R" (where n > 2) are linearly independent. (b) S = {x € R¹ | x ≥ 0, 1²x = 1, and b₁,b₂ € R. (c) S = {x € R¹ | x ≥ 0, ₁ xiαi = b₁, [₁=1 x₁a = b₂}, where a₁,..., an ER x¹y ≤ 1 for all y with ||y||2 = 1}. (d) S = {x € R" x ≥ 0, xy ≤ 1 for all y with ₁|yi| = 1}. =1
Problem 6. S in the form S = {x | Ax≤ b, Fx = g}. Which of the following sets S are polyhedra? If possible, express (a) S = {y₁a₁ + y2a2 | −1 ≤ Y₁ ≤ 1, − 1 ≤ y₂ ≤ 1}, where a₁, a2 € R" (where n > 2) are linearly independent. (b) S = {x € R¹ | x ≥ 0, 1²x = 1, and b₁,b₂ € R. (c) S = {x € R¹ | x ≥ 0, ₁ xiαi = b₁, [₁=1 x₁a = b₂}, where a₁,..., an ER x¹y ≤ 1 for all y with ||y||2 = 1}. (d) S = {x € R" x ≥ 0, xy ≤ 1 for all y with ₁|yi| = 1}. =1
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Problem 6.
S in the form S = {x | Ax≤ b, Fx = g}.
Which of the following sets S are polyhedra? If possible, express
(a) S = {y₁a₁ + y2a2 | −1 ≤ y₁ ≤ 1,
linearly independent.
(b) S = {x = R¹ | x ≥ 0, 1²x = 1,
and b₁,b₂ € R.
(c) S = {x € R" | x ≥ 0,
− 1 ≤ y₂ ≤ 1}, where a₁, a2 € R" (where n > 2) are
₁ xiαi = b₁, [₁=₁ x₁a = b₂}, where a₁,..., an ER
x¹y ≤ 1 for all y with ||y||2 = 1}.
(d) S = {x € R" x ≥ 0, xy ≤ 1 for all y with ₁|yi| = 1}.
=1
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