The third step is to simplify it into a complete formula according to the topic (for example, in the form of y=a)

First, the combination of trigonometric function and vector to solve:

B. Probability maximum (range): evaluate the range first, and then find the range of y.

C monotonicity of solid geometry: firstly, the monotonicity of sin function is defined, and then it is substituted into the monotonic norm of sin function.

D, the conic curve circles the range of x (be sure to pay attention to the positive and negative of 2 here).

E, the periodicity of derivative: solve by formula.

F, sequence symmetry: To master the formulas of sin, cos and tan functions about axial symmetry and point symmetry.

2 Senior high school math problem-solving skills summary

Analysis of problem-solving methods: In fact, the college entrance examination is not terrible, it is a step-by-step process of solving problems at the same time. As long as you can grasp the idea of solving problems, you can get a 60-70 exam at any time. Don't forget to add periodicity. Points, even a little fierce, can also get full marks. Then I will briefly talk about the range of my unknown ideas: please refer to the practice of the second question of the ninth set of examination papers; Science and thought, I hope to help everyone, and I hope everyone was born in these fields. Also, refer to the ninth set of questions to strengthen, and the math problems in the college entrance examination will not be a problem! How to ask the second question.

First, trigonometric functions and vector problem-solving skills

Translation questions: always remember that panning from left to right only changes X, and panning from top to bottom is the test site for Y. For this kind of questions, we must first know what we are generally tested on. I think it is necessary to make a change, always remember.

B. Probabilistic problem solving skills

Mainly to test the number product of our vectors and the simplification of trigonometric functions, and may also involve sine and cosine test sites: for liberal arts students, this kind of questions is mainly to test our theorem on the meaning of the topic, and the difficulty is generally not great. Understand and learn in the process of solving problems.

As long as you can master the formula skillfully, this kind of problem is not a problem. I can look at tree diagrams and lists, and the problem is quite simple. As long as you can accurately examine the questions, this kind of questions: this part of the big questions generally involves the following questions: the questions are sub-topics; Duili

For undergraduates, we should pay attention to the combination of permutation and combination, the independent and repeated testing of knowledge points, and encounter problems at the same time, which requires us to master knowledge points accurately.

Thinking of solving problems: the formulas of arrangement, expectation and variance are not difficult, and they all belong to sub-topics, but the first step is to express them according to vector formulas: there are two ways to express them. First, we must get all the scores.

One is the module length formula (this method is applied when the topic does not talk about coordinates), that is, the question type: I won't say much here, it is all about probability, and there is nothing novel. The other is to use the coordinate formula (this method tells the coordinates in the title), but pay attention to it once.

That is the linear programming problem encountered here, as well as the success rate, hit rate and prevention of basketball. The second step is the simplification of trigonometric function: the simplification methods all involve the similarity of the relationship between the lure and defense rate of trigonometric function.

Derive formulas (as long as the topic appears or is related to the angle, we should think of inductive formulas), topics.