MATH2230B - Complex Variables with Applications - 2019/20

Course Year: 


  • There is NO tutorial on the first week
  • Since Feb. 17th, we will resume our lectures online. You will receive an invitation before the lectures so you can join the classroom on Zoom. The online lecture will last till university announce its end. As for assessment, we suspend quiz at this moment. Midterm exams will be postponed till after the university resume fact-to-face lecture. As for homework, we will assign it like before weekly. Handed-in homework can be submitted to TA through email.
  • Due to the announcement from education department of HK, we cannot resume face-to-face lecture before Apr. 24. So I make the following changes for the assessment of the lecture. Homework problem: 50%; Final exam: 50%. All homework since the week of Feb.26 (including the week of Feb. 26) will be required to turn in through either email or blackboard. All announcements on my website will also be posted in blackboard.
  • Final exam will be conducted online without invigilation. Assessment scheme is pending to be endorsed.
  • 1. Final examination is scheduled on May 06 from 17:30 to 20:30. The examination paper will be available on Blackboard at 17:30. The exam ends at 20:30; 2. After 20:30, you will have 15 mins to prepare submission. The format of submission could be .jpg and .pdf files. Please be noted that any submission after 20:45 WILL NOT be accepted; 3. During your examination, there will be another meeting on Zoom at the same classroom of the regular lecture. The zoom meeting will start at 17:15 and end at 20:45. If you have any questions about examination paper or submission, you can try to post your questions on Zoom. You are kindly suggested to post your questions publicly instead of sending private message to me. If I am not available, my TAs can also answer your concerns; 4. The exam covers all topics taught in this course, tightly follows my lecture notes. Totally there will be at most 10 problems in the exam. 2-3 of them will be challenging for screening A class students. Please try your best to solve them. Please be reminded that plagiarism is strictly prohibited; 5. This is an open notes exam. You can use books, lectures notes, homework problems assigned, old examinations of this course and internet. But please be reminded that searching on line takes time. The final examination of this time is delicately designed to avoid any available problems on line. Notes listed above should be used as a reference; 6. Exchanging ideas and information with anyone (except TAs and I) are strictly prohibited.

General Information


  • YU, Yong
    • Office: LSB 214
    • Tel: 39438900
    • Email:
    • Office Hours: Any time/ by appointment

Teaching Assistant

  • TAI, Ho Man
    • Office: LSB 232
    • Tel: 3943 5294
    • Email:
  • LUO, Kaihui
    • Office: LSB 232
    • Tel: 3943 5294
    • Email:

Time and Venue

  • Lecture: Mo 4:30PM - 6:15PM, LSB LT2; We 4:30PM - 5:15PM, Y.C. Liang Hall 103
  • Tutorial: We 5:30PM - 6:15PM, Y.C. Liang Hall 103

Course Description

You will be evaluated by homework, quiz, midterms and final examinations. Homework problem will be assigned weekly. Only two sets of homework will be required to hand in and graded. Please pay attention, NOT ALL homework problems have to be taught in class. If you see some unfamiliar homework problems, please try your best to work out. Otherwise I would be very pleased to discuss them with you. Starting from the second week (the week starting on Jan.13), there will be a 15-min short quiz on Wednesday lecture. It will be held every two weeks. The quiz is used to test basic concepts that you will have learned. Please be reminded that all the course works will be returned on your tutorial class.


  • Complex Variables and Applications, Ninth Edition, by James Ward Brown/Ruel V. Churchill


  • Complex Analysis, Princeton lectures in analysis II, by Elias M. Stein/Rami Shakarchi
  • Complex Analysis: An Introduction to the Theory of Analytic Functions of One Variable, by Lars Ahlfors
  • Fundamental of Complex Analysis, by E. B. Saff and A. D. Snider, Prentice Hall
  • Visual Complex Analysis, by T. Needham, Cambridge University Press

Lecture Notes

Tutorial Notes



Assessment Scheme

Homework 50%
Final Exam 50%

Honesty in Academic Work

The Chinese University of Hong Kong places very high importance on honesty in academic work submitted by students, and adopts a policy of zero tolerance on cheating and plagiarism. Any related offence will lead to disciplinary action including termination of studies at the University. Although cases of cheating or plagiarism are rare at the University, everyone should make himself / herself familiar with the content of the following website:

and thereby help avoid any practice that would not be acceptable.

Assessment Policy

Last updated: May 01, 2020 12:56:09