2. When an error is found to be caused by an inaccurate understanding of a formula or theorem, it can be re-deduced to ensure its correct understanding and accurate application.
3. If you can't find mistakes or solve difficulties, you can ask teachers, classmates or online resources for help.
4. After correcting mistakes, you can find some similar topics to practice and consolidate your understanding and skills.
In order to avoid similar mistakes, it is suggested to develop good study habits.