### 2019　Differential Equations I

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Instructor(s)
Onodera Michiaki
Course component(s)
Lecture
Day/Period(Room No.)
Wed3-4(W242)
Group
-
Course number
MTH.C341
Credits
1
2019
Offered quarter
1Q
Syllabus updated
2019/3/18
Lecture notes updated
2019/5/7
Language used
Japanese
Access Index ### Course description and aims

After introducing some terminology and fundamental notions on differential equations, we explain elementary method for explicit solutions, general method for solving constant coefficient linear differential equations and some analysis on linear differential equations. This course is to be continued to Differential Equations II.

Differential equations are fundamental notions appearing in all fields of mathematics. Space of solutions have algebraic structure, existence theorems of solutions give various geometric and analytic objects of great interests. This course is an entry to these paths.

### Student learning outcomes

Main topic of this course is a basic theory and its applications of ordinary differential equations of one unknown variable. Ordinary differential equations describe various natural phenomena and physical laws, thus, method of solving equations and its theory are important mathematically as well as for applications. Students are expected to master method of solving differential equations, and to understand the theory to derive properties of solutions.

### Keywords

differential equation, initial value problem, separation of variables, complete differential equation, fundamental solution, Duhamel principle

### Competencies that will be developed

Intercultural skills Communication skills Specialist skills Critical thinking skills Practical and/or problem-solving skills
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### Class flow

Standard lecture course.

### Course schedule/Required learning

Course schedule Required learning
Class 1 examples of differential equation, solutions of differential equation, initial value problem and boundary value problem Details will be provided during each class session
Class 2 elementary method, separation of variables, homogenious case, first order linear differential equation Details will be provided during each class session
Class 3 complete differential equation, non-normal form, higher order differential equation Details will be provided during each class session
Class 4 linear ordinary differential equation, exponential function of matix and constant coefficient system of ordinary differential equation Details will be provided during each class session
Class 5 variable coefficient system of ordinary differential equation and fundamental solution Details will be provided during each class session
Class 6 non-homogeneous equation and Duhamel principle Details will be provided during each class session
Class 7 solution via series expansion Details will be provided during each class session
Class 8 examples and applications of linear differential equation, comprehension check-up Details will be provided during each class session

### Textbook(s)

Introduction to differential equations, Koji Kasahara, Asakura Shoten (Japanese)

to be determined

### Assessment criteria and methods

Evaluation based on mid-term and final exams. Details will be provided in the class

### Related courses

• MTH.C342 ： Differential Equations II

### Prerequisites (i.e., required knowledge, skills, courses, etc.)

Calculus I / Recitation, Calculus II / Recitation, Linear Algebra I / Recitation, Linear Algebra II / Recitation 