2. Arithmetic ratio general term formula and summation formula

3. Recursion of sequence (* is very important)

4. Triangle: Two basic relationships (square relationship and quotient relationship). Inductive formula. Sum and difference of two angles. Double angle. Auxiliary angle. Sine and cosine theorems. Special angle trigonometric function value (don't forget this)

5. Quadratic function, quadratic equation and quadratic inequality

6. Basic inequality *

7. Conic curve *

8. Derivatives, derivatives of several common functions.

9. Solid geometry knowledge

10. Some basic knowledge.

1 1. Supplement: For example, a four-point * * * circle. Circular power theorem and so on. . .