Question 1 1: function and derivative. According to the meaning of the question, the minimum value of the function is zero, and the maximum and minimum values of the function can be obtained by finding the value of a.

Question 12: Set points according to the meaning of the topic, and get the equivalence relation through verticality. Can be solved.

Question 14: There are many ways to examine basic inequalities.

Question 14: Arithmetic and the application of geometric progression's first n summation formulas can be solved by enumeration.

Question 15: It is not difficult to prove parallelism and verticality in solid geometry.

Question 16: application of sum-difference formula and double angle formula of trigonometric function. It's not difficult, but the basic knowledge should be solid.

Question 17: Practical application of trigonometric function, finding the maximum value of function and derivative.

Question 18: Conic curve question: Actually, it is a routine question with certain requirements in calculation, and it is the same question in the general examination. Impartial.

Question 19 and 20: I don't expect to get full marks. At least this question is different. It is difficult to get full marks, but it is relatively easy to get a certain score.

The law of the difficulty of the math finals in college entrance examination;

1, the last question in the college entrance examination is usually the key to solving the third question, so the first question and the second question are also the basis of the third question. The calculation of the first and second questions is usually simple, but it is not easy to remember.

2. There are basically several kinds of math finale questions in college entrance examination, so it is very useful to have targeted exercises at this time, and one of the basic characteristics of these questions is flexibility, flexibility in setting, flexibility in solving problems and flexibility in thinking.

3. The calculation of the last question is usually large, and the entrance examination often loses patience while thinking about ideas, but at the same time it is calculating complex questions.