Understand the types of questions. When you just get the test paper, you will generally feel nervous. Don't be busy answering the questions. Read the whole volume from beginning to end. Be careful when you see simple questions from confident answers. Don't get carried away. In the face of difficulties, be patient, don't worry, and strive to achieve: firm confidence, slow and steady, step by step. Throughout the process, remember that people are good to me and I don't care. I'm not afraid of people giving me a hard time.

Monotonicity of functions and derivatives.

This paper examines the concepts of set operation, function definition domain, range, analytical formula, limit, continuity and derivative of function. If the derivative is greater than zero, it will increase monotonically; If the derivative is less than zero, it decreases monotonically; The derivative equal to zero is the stagnation point of the function, not necessarily the extreme point. To judge monotonicity, the derivatives of the left and right values of the entry point are required. If the known function is increasing function, the derivative is greater than or equal to zero; If the known function is a subtraction function, the derivative is less than or equal to zero.

According to the trunk of the question, provide information and draw pictures to get the correct answer.

First of all, know the requirements of the stem to fill in the content. Sometimes, these have some results, such as answering specific figures accurately. Unfortunately, some candidates didn't notice this and made mistakes. Secondly, if there are no additional conditions, we should answer according to specific conditions and general laws, and carefully analyze the implied requirements of this topic. In short, filling in the blanks is the same as choosing a topic. This type of question is different. Write how you worked out the problem, but write the final result directly.

Only by laying a good foundation, strengthening training and strengthening problem-solving cheats can we solve problems accurately and quickly. On the other hand, it is necessary to strengthen the analysis and research on reporting problems, master the characteristics and solutions of reporting problems, and reduce mistakes.