1. Translation:

Chinese translation into mathematical language includes: letters representing unknowns, images representing functions or geometric problems, probability language and so on. This method is often used in functions, geometry and inequalities.

2. Specialization:

In the face of abstract or incomprehensible topics, we try to use the most extreme and special numbers instead of variables to help us understand the topic. This method is often used to eliminate the topic of option selection, and special conclusions are often used in the process of solving big problems.

3. Keep an eye on the target:

Combine the target with the known, and relate related theorems, definitions and methods. In the finale topic, it is often necessary to constantly change the goal, that is, the goal needs to be used repeatedly!

The above three need to be applied flexibly in the process of solving problems. Next, let's talk about the grand finale of the 20 19 college entrance examination in Zhejiang Province.

Formula 3 for improving the speed of solving problems

Theorem:

The vertex of a right triangle with the same hypotenuse is a * * * circle, and the vertex of a triangle with the same vertex angle is a * * * circle.

Students who do well in the exam can do simple questions quickly and accurately, save time on the middle and low-grade questions in front and leave precious time for the big questions in the back; Only in this way can we take our time in the exam. In order to improve students' problem-solving speed, this series, with a total of 32 articles, aims to help students.

There are often four * * * circles in the examination questions, which is a blind spot and error-prone point for many candidates. It is not impossible to solve the four-point cycle problem by conventional methods, but it is too slow and complicated. Based on the principle that simple problems can be done quickly and correctly, the author finds that proper use of triangle relation can speed up the solution of four-point * * * round problems.

Through the series 3 of this paper, we talk about some methods of solving four-point * * * circle by triangle relation, which can help students with better basic knowledge to further improve the speed of solving problems, thus taking the first step for us to learn high school mathematics well.