Lectures of the Introduction of Differential Equations Posted on 2024-01-18 Edited on 2024-10-12 Lectures of Exercise Classes Lecture 2 Lecture 6 Lecture 8 Lecture 11 Answers of Exams Midterm Exams Answers Final Exams Answers References: 丁同仁. 常微分方程教程 [M]陈祖墀. 偏微分方程 [M]Evans. Partial Differential Equations [M]