First, multiple choice questions

1、D 2、A 3、A 4、D 5、D

The four basic assumptions of linear programming do not include ().

A. equilibrium

B. continuity

C. the real thing

D. differences

2.？ The decision variable in linear programming problem should be ().

A. continuous variables

B. Discrete variables

C. integer variables

D. random variables

3.？ The following statement about operations research is incorrect ().

A.it's short for management science.

B involving applied mathematics, formal science, economics, management and other disciplines.

C. Use mathematical modeling, statistics and calculation methods to solve complex problems, so as to achieve optimal and near-optimal solutions.

D. Use scientific management methods to provide decision support for managers to achieve management objectives.

4.？ The three elements of the mathematical programming model do not include ().

A. Decision variables

B. objective function

C. restrictions

D. optimal solution

5.？ The following description about linear programming problem is incorrect ().

A. decision variables are controllable continuous variables.

B. the objective function is linear.

C. the constraint function is linear.

D. differences

Dagong 17 Spring Operations Research Online Homework 2 Reference Answer:

First, multiple choice questions

1、D 2、B 3、D 4、B 5、D

The statement about the transportation problem with m supply points and n demand points is incorrect ().

A The number of basic variables of this transportation problem is generally m+n- 1.

B the numbered box in the transportation plan should be m+n- 1.

C. When the initial scheme is given by the minimum element method, every number filled in the scheme table will cross out a row or a column in the unit freight table, and it is often necessary to fill in "0" at this time.

D the closed-loop method can be used to determine the initial scheduling scheme.

2.？ In the network diagram, the latest completion time of each activity is equal to the latest start time of all its direct activities ().

A. Maximum value

B. Minimum value

C. average value

D. Total

3.？ In the following statement about graphs, the wrong one is ().

A. the point represents the object of study.

B. Edge indicates the connection between things.

C. An undirected graph is a graph composed of points and edges.

D. acyclic graphs are called simple graphs.

4.？ The sum of the capacities of all arcs in the cut set is called ().

A. Maximum flow

B. Interception

C. Minimum intercept

D. Maximum interception

5.？ The following statement about charts is incorrect ().

An edge is called a ring if its two endpoints are the same.

If there is more than one edge between two endpoints, it is said to have multiple edges.

C. A graph without loops and multiple edges is called a simple graph.

D. An undirected graph is a graph composed of points and arcs.

Dagong 17 Spring Operations Research Online Homework 3 Reference Answer:

First, multiple choice questions

1、D 2、A 3、D 4、A 5、A

In the following statements, () does not belong to the characteristics of probabilistic decision-making problems (decision-making problems under uncertainty).

A. decision makers are faced with multiple decision-making schemes.

B it is impossible to estimate the occurrence probability of several different decision states corresponding to each decision scheme.

C. the choice of scheme only depends on personal subjective tendency and preference.

D. the probability of future situations and conditions is known.

2.？ Drawing various alternatives, possible states, probabilities and consequences on a graph is called ().

A. decision chart

B. Maximum flow

C. Minimum spanning tree

D. connected graph

3.？ In the classification of games, according to () can be divided into zero-sum games and non-zero-sum games.

A.how many people are there in this bureau

B. Is there a limited number of strategies?

C. the relationship between game and countermeasures

D. Characteristics of payment function

4.？ () refers to the decision-maker who is most optimistic about the natural state when the situation is unknown. Starting from the best natural state, he first selects the maximum income value from each scheme, and then selects the optimal decision-making scheme from these maximum income values.

A. Optimism criteria

B. Compromise criteria

C. possible guidelines for equality

D. Regret value standard

5.？ () is also called the principle of taking the big and taking the small. This is a conservative decision-making method in uncertain decision-making problems. After fully considering the possible minimum income, the largest one is selected from the minimum income.

A. Pessimistic criteria

B. Compromise criteria

C. possible guidelines for equality

D. Regret value standard