If the quantity is large, it is really difficult. I suggest you read the math book 1 several times. Read through all the examples and learn how to do it clearly. 2. Go to the bookstore to buy exercises. It's best to buy all the examples, so that there can be a process. You must do more exercises. Just because you don't understand today doesn't mean you won't do it tomorrow. Don't be afraid of losing face. Ask your classmates and teachers. Remember to preview the topic. Remember to preview it, so that the class will have a bottom.

I hope you can adapt as soon as possible. Come on, don't look at others, see how much you pay every day.