The course resources for detailed explanation of the exercises in the third edition of Mathematical Analysis can be found in the large-scale open online course of China University. According to relevant information, public information shows that the course resources of Detailed Exercises of Mathematical Analysis 3rd Edition can be found on some educational websites, such as China University's massive open online course, which provides free online course resources, including Detailed Exercises of Mathematical Analysis 3rd Edition. The reason is that these websites cooperate with some universities or educational institutions to provide high-quality educational resources.