Section 1.10
Linear Models in Business,
Science, and Engineering
Example
Example (cont.)
Let x1 , x2 , x3 equal the number of units of foods 1, 2, and
3, respectively.
We need to pick an appropriate number of units so that
we end up with 100 mg of vitamin

Section 1.6
Applications of Linear
Systems
Network Flows
Arise when studying the flow of a material through
a network.
Has applications to:
Fluid flows
Traffic flows
Electrical currents
Distribution of products from wholesalers to
retailers
Network Fl

MAT 246
Differential Equations
Chapter 3
Modeling with
First-Order
Differential
Equations
3.1 Linear Models
2
Erickson/Biddy
Review Material
A DE
as a mathematical model in Section 1.3
Reread Solving a Linear First-Order Equation in
Section 2.3
3.1 Line

Review for MTH 285 Midterm
Here is a suggestion of problems to review for the Midterm. To be frank, I think the examples in the
Notes and Lectures are better representations of what might be on the exam than some of the
homework problems. (No, I didnt wri

Section 1.10
Linear Models in Business,
Science, and Engineering
Example
Example (cont.)
Let x1 , x2 , x3 equal the number of units of foods 1, 2, and
3, respectively.
We need to pick an appropriate number of units so that
we end up with 100 mg of vitamin

Section 1.6
Applications of Linear
Systems
Network Flows
Arise when studying the flow of a material through
a network.
Has applications to:
Fluid flows
Traffic flows
Electrical currents
Distribution of products from wholesalers to
retailers
Network Fl