4. Reconsider the model in Problem 3 with objective function Maximize Z = C₁x₁ + ₂x₂, where C₁ ≥ 0, C₂ ≥ 0. Use the sensitivity analysis on the objective coefficients to answer the following questions. (a) Find the range of such that the optimal solution remains as (x₁, x₂) = (3,4). C₁ (b) Find the range of such that the optimal solution remains as (x₁,x₂) = (4,2). C₂ (c) Find the range of such that the optimal solution remains as (x₁, x₂) = (0,5). (d) If c₁ and c₂ are allowed to be negative, find the conditions on c₁ and C₂, and the range of such that the optimal solution remains as (x₁, x₂) = (4,0). C₂ Question 3 is given as follows: 3. Consider the following problem. Maximize Z = 3x₁ + 2x₂, subject to X1 ≤4 x₁ + 3x₂ ≤ 15 2x₁ + x₂ ≤ 10 (resource 1) (resource 2) (resource 3) and x₁ ≥ 0, x₂ ≥ 0, x3 ≥ 0. The optimal solution is (x₁, x₂) = (3,4) with Z* = 17. (a) Is any of these three constraints binding constraint? (b) Use graphical analysis to determine the shadow prices for the respective resources. 3
4. Reconsider the model in Problem 3 with objective function Maximize Z = C₁x₁ + ₂x₂, where C₁ ≥ 0, C₂ ≥ 0. Use the sensitivity analysis on the objective coefficients to answer the following questions. (a) Find the range of such that the optimal solution remains as (x₁, x₂) = (3,4). C₁ (b) Find the range of such that the optimal solution remains as (x₁,x₂) = (4,2). C₂ (c) Find the range of such that the optimal solution remains as (x₁, x₂) = (0,5). (d) If c₁ and c₂ are allowed to be negative, find the conditions on c₁ and C₂, and the range of such that the optimal solution remains as (x₁, x₂) = (4,0). C₂ Question 3 is given as follows: 3. Consider the following problem. Maximize Z = 3x₁ + 2x₂, subject to X1 ≤4 x₁ + 3x₂ ≤ 15 2x₁ + x₂ ≤ 10 (resource 1) (resource 2) (resource 3) and x₁ ≥ 0, x₂ ≥ 0, x3 ≥ 0. The optimal solution is (x₁, x₂) = (3,4) with Z* = 17. (a) Is any of these three constraints binding constraint? (b) Use graphical analysis to determine the shadow prices for the respective resources. 3
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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