Differential Equations 2021
or see this version of the syllabus
“Differential Equations” is a spring semester course for second-year students studying at the Faculty of Computer Sciences. It is designed to suit the requirements of the Faculty of Computer Sciences curriculum as well as UoL where DE is a part of the mathematical curriculum. Besides the course on differential equations is included as a topic in “Mathematical methods for economists” external exam.
This course is an important part of the bachelor stage in the education of the future applied mathematicians and computer scientists. It has to give students skills for the implementation of mathematical knowledge and expertise. Its prerequisite is the knowledge of the single variable calculus.
In the spring semester, the course is split into two unequal parts: it is taught from January through the end of April and after the students finish with their UoL exams in May it will resume and will continue till mid-June.
The assessment of the students will be done by setting mock exam by the end of the 3rd module, then later by the University of London (UoL) examinations in May and final exam will be set in late June. But the final grade will depend solely on mock, final exams performance and home assignments grades.
As a general policy, personal computing devices such as laptops, calculators etc. are not supposed to be used in the course. They are absolutely prohibited in all exams. Students are expected to do all necessary arithmetic computations by hand.
Lecturers and Teachers
|Lecturer|| K.A. Bukin
Lecture 10.01.2023. First order equations.
Lecture 17.01.2023. Fundamental theorem of DE. link: https://us06web.zoom.us/rec/share/oVMypYgrIpB08O7-PgSEWkGH6N3yM0wLjlY6e8GaL46KLU_OJHgwWKJi9ApRBBhw.BdVBhCdUWDk7b4u6 Пароль: *$5zSyLv
Lecture 24.01.2023. Solow's growth model. Linear DE of the 2nd order. Wronskian link: https://us06web.zoom.us/rec/share/DaL3pw7DPoXWbtxGRZcr55Upe1d5Nk2Um3-6-v_sBFnlyYUVhGujXG4BvaF-8cCL.T1waUT-pmhwyOfuD Пароль: .2QmK8dl
Lecture 31.01.2022. How to solve n-th order linear DE with constant coeffifcients. recording: https://us06web.zoom.us/rec/share/kYotRyuFwYWurRbty5UOaZnNZSdn5_ov84LgzrGNYizT3K2y126MqCu1UuGYycRZ.ZuB_RTy-y_FIDLcC Пароль: =5Jin56f
Lecture 07.02.2022. Solutions of the nonhomogeneous equations with quasipolynomials. Youtube
Lecture 14.02.2022. Variation of parameters method. Youtube
Lecture 21.02.2022. Systems of linear DE. Youtube
Lecture 28.02.2022 Solving systems using JNF. Youtube
Lecture 14.03.2022 Laplace transform. Youtube
Lecture 21.03.2022 Matrix exponent. Youtube
Lecture 04.04.2022 Liouville formula. Youtube
Lecture 11.04.2022 Sturm theorem. Youtube
Lecture 18.04.2022 Linear difference equations. Youtube
Lecture 25.04.2022 Systems of difference equations. Youtube
Lecture 30.05.2022 Autonomous systems and types of equilibria. Youtube
Lecture 01.06.2022 Equilibria of nonlinear systems.
Lecture 06.06.2022 Liapounov's function. Youtube
Lecture 08.06.2022 Exam preparation. Youtube
Whiteboard of the 1st seminar by V. Goncharenko https://disk.yandex.ru/i/fKMmpf7Dg3VaYA
Midterm lasts for 80 minutes
Materials: Demo version
Exam demo version:  (recommended to solve)
Last year exam: 
Tasks for preparation: [Tasks]
Exam demo version: [Demo version]
Exam assessment rules: [Assessment rules]
Home assignments 2023
Home assignment 1, due on "February 3rd"
Home assignment 2, due on "February 17th"
Home assignment 3, due on "March 3rd"
Home assignment 4, due on "March 24th"
Home assignment 5, due on "April 21st"
Home assignment 6, due on "June 13th"
The home assignments constitute 30% of the final grade. The final exam is 40% of the final grade. The rest of the grade is formed by Midterm test which is due in the end of the 3rd module.
The final grade on the course will be determined according to the formula:
Grade = 0.4 * Final Exam + 0.3 * Midterm test + 0.3 * Home assignments
All grades are given initially out of 100. The final grades are also transferred to 10- and 5-points grades in accordance with the table (to be posted). 3. The scale of corresponding grades 3.1. Total grades for a given course are converted from the 100-point scale to the 5-point and 10-point scale. 3.2. The following basic scale has been established to convert grades from the 100-point scale to the 10-point scale 100-point scale 10-point scale
0-19,99 -> 1
20-29,99 -> 2
30-39,99 -> 3
40-46,99 -> 4
47-53,99 -> 5
54-61,99 -> 6
62-69,99 -> 7
70-77,99 -> 8
78-85,9 -> 9
86-100 -> 10
Retakes are organized in accordance with the HSE Interim and Ongoing Assessment Regulations
- Mathematics for economists, Simon C. P., Blume L., 1994
- A.F. Fillipov. Collection of problems on differential equations. Moscow, “Nauka”, 1973 and later editions.
- V.K. Romanko, Course on Differential Equations and Calculus of Variations. Moscow and Saint-Petersburg, “Fizmatlit”, 2001 and later editions.