In mathematical calculation, you should write a word solution first. If the choice is 4 digits, the second largest is usually the correct choice. Looking at the options alone, there are generally more BD and less A. One more thing, don't change it after you choose it unless you are more than 90% sure.

Mathematical multiple choice formula 1, the answer has radical symbols, don't choose.

2. If the answer is 1, please select.

3. When all three answers are yes, choose the right one.

4. When one is positive X and the other is negative X, choose one of them.

If the question looks simple, then the answer is complex, and vice versa.

6. If you choose the previous question and this question, it is not suitable to do this article if there are three identical ones in a row.

7. A good answer depends on your eyes.

8. when none of the above is practical, choose B.

How to get more answers to math multiple-choice questions? 1. fill in the blanks with inequality questions, optimize the special value method, bring in the intermediate value, and choose the easy to get;

2. If there is transcendental expression in an equation or inequality, give priority to the thinking method of combining numbers and shapes, and keep in mind various functional models and the characteristics of each model;

3. The topics of functions, equations or inequalities should be directly considered first, and then the relationship between them should be established. Consider the domain first, and then use the "three-in-one theorem". The zero point of the function is the root of the equation.

4. In the face of elementary functions with parameters, we should grasp the invariance of the parameters when learning. Such as constant fixed point, symmetry axis of quadratic function, period of trigonometric function, etc.

5. The problem of constant establishment or its opposite can be transformed into a maximum problem. Pay attention to the application of quadratic function, flexibly use the maximum value on the closed interval, and discuss ideas in different categories, which should not be repeated or omitted;

6. To find the value range of parameters, we should establish an equation or inequality about parameters, complete or solve the inequality with the definition domain or value domain of the function, take the separation constant, and finally become a constant establishment problem to find the maximum value;

7. To solve the problem of curve equation, if you know the shape of the curve, you can choose the undetermined coefficient method. If you don't know the shape of the curve, the steps used are to establish the system, set the points and simplify the list (pay attention to remove the special points that do not meet the conditions);

8. Find the eccentricity of ellipse or hyperbola, and establish the relationship equation among A, B and C. ..