What are the skills of high school mathematics? The last problem of 1. conic curve is often difficult to solve. At this time, the special value method can be used to force the calculation process. The process is to solve the problem first, and then calculate the delta. With Vieta theorem, list the expressions that need to be solved, and it's ok.
2. The space geometry of the required mathematics questions in the college entrance examination is a step in the proof process. I really can't think of directly writing unused conditions and then drawing unexpected conclusions. If the first question really can't be written directly, the second question can be used directly! Candidates who use conventional methods suggest that a spatial coordinate system should be established first. If you make a mistake, you can get at least a few points. This is an opportunistic skill, but it's like crossing a point!
3. There is a step in the process of proving space geometry that I really can't think of directly writing unused conditions and then drawing unexpected conclusions. If the first question really can't be written directly, the second question can be used directly! Students who use conventional methods suggest that a spatial coordinate system should be established at will first. If you make a mistake, you can get 2 points!
4. A new method to find dihedral angle b-oa-c in solid geometry. Using cosine theorem of trihedral angle. Let dihedral angle b-oa-c be ∠oa, ∠aob be α, ∠boc be β and ∠aoc be γ. This theorem is: cos ∠ OA = (cos β-cos α cos γ)/sin α sin γ. Knowing this theorem, if you encounter the problem of finding dihedral angle in solid geometry in the exam, you will come up with a set of formulas. It is not too late. Try it?
5. The topic of derivative is generally not difficult, but we should pay attention to the level and steps of solving the problem. If you want to prove inequality with constructor, you can find a breakthrough from the known or previous question and give up if necessary; Pay attention to the application of geometric meaning and whether the point is on the curve;
6. To solve the probability problem, set the event first, and then write the reason for using the formula. Of course, you should pay attention to the number of steps to determine the details of the solution; If there is a distribution table, the probability sum is 1, which is an important method to test whether it is correct or not.
What are the answering skills for getting high marks in college entrance examination mathematics? First, enter the mathematical situation in advance.
Before entering the senior high school entrance examination for mathematics, we should abandon distracting thoughts, eliminate distracting thoughts, leave the brain in a "blank" state, create mathematical situations, then brew mathematical thinking, enter the "role" ahead of time, and comfort ourselves by counting utensils, prompting important knowledge and methods, and reminding common misunderstandings and mistakes in solving problems, so as to reduce stress, go into battle lightly, stabilize emotions, enhance confidence, and make thinking simple, mathematical and self-comforting.
Second, concentrate on eliminating anxiety and stage fright.
Concentrated attention is the basis of full marks in mathematics in college entrance examination. A certain degree of nervousness and nervousness can speed up the nerve connection and is conducive to positive thinking. It's called inner tension and abnormal positive thinking. However, if you are too nervous, you will go to the opposite side, form stage fright, have anxiety and inhibit your thinking, so you should be sober, happy and open-minded. This is called external relaxation, which can help you get full marks in mathematics in the college entrance examination.
Third, fight calmly.
A good beginning is half the battle. From the psychological point of view of the college entrance examination, this is indeed very reasonable. After you get the test questions, don't rush for success, and start answering them immediately. Instead, we should browse the whole set of questions, get to know the situation of the questions, and then firmly grasp one or two simple and easy-to-learn questions, so as to have a good start and quickly enter the best thinking.