Higher Mathematics Higher Education Press, edited by Department of Mathematics, Tongji University, 6th Edition, Green Paper. If you want to learn calculus, you only need to learn the first volume of the sixth edition, including limit, differential, indefinite integral, definite integral and ordinary differential equation. It depends on his ability to learn differential mean value theorem and generalized integral, but it is of little significance to high school competition. Mathematical analysis is not recommended. Real number theory is of little use to physics, just to standardize calculus. Therefore, when studying, we should focus on how to apply it. It is very important to finish the exercises after class. Or you might as well not study calculus.