I have a bachelor's degree in engineering. I graduated seven years ago. I have never been exposed to mathematics. I want to teach myself math again. The goal is to learn advanced mathematics. How to start? Engineering mathematics should be advanced mathematics, right Let me tell you this: high school mathematics is to solve some special cases, and advanced mathematics is to solve general problems. Take the calculation of object volume as an example. Can high school only calculate the volume of some regular objects? Advanced mathematics can calculate the volume of any object with regular shape.