Learn to adjust and do math problems often can't be done overnight, especially when you encounter difficult problems, you should analyze them carefully, learn to review your knowledge, change the new into the old, and turn the difficult into the easy. Cultivate your ability to use knowledge comprehensively. If you can't solve the problem, you can rest and adjust first. Read a book again, or the solution of a similar problem, and then study the solution of the problem. Sometimes particularly difficult problems can be solved tomorrow or discussed with classmates.