First of all, everyone has a misunderstanding. It is really difficult to divide generations, but the book is very thick and involves different knowledge ranges and depths.

Secondly, the second misunderstanding, the difficulty and scope of subject mathematics is definitely less than the difficulty of the book itself. Many candidates have to learn a lot of advanced mathematics thanklessly, and the content of advanced mathematics to be tested is really tired. Some people may say that if I study a little deeper, simple questions will be easy to test. This is the second misunderstanding of thinking inertia. In fact, you have learned the basic contents of advanced mathematics very well.

The third misunderstanding: the difficulty of specialized courses is relatively low.