What counseling book should I use for my freshman and senior year?
I have practical experience. There is a Spark book, a course of advanced mathematics, edited by Peng Hui, with a green cover and a Tongji version of advanced mathematics textbook. There are both detailed explanations of after-class exercises and selected examples. I don't know what version of the textbook you are using, but this tutorial book on advanced mathematics is universal, and so are the questions in the book. I remember that when I was a freshman, I didn't understand the senior math class, so I read this book and took the exam without finishing it.