Make-up, not very useful. How can I put it? In fact, when you get to college, you will find that you have actually learned nothing before. Because one semester of college courses are basically more than three years of high school. . . . . So, if you really want to make up, look at those formulas, basic formulas. Such as trigonometric substitution, arithmetic progression-geometric progression summation and inequality. . . . .

High school just gives you some formulas and exercises. I didn't really come into contact with what can be called "mathematics" until I went to college, involving some mathematical ideas and so on. . . . .

All the above is the foundation. If you don't understand it at all, it will definitely affect your future study. But if you make up too seriously, you will naturally have good time and energy. If not, just look at the formula as I said ~ ~