1, meeting distance = speed x meeting time.

2, meet time = meet distance ÷ speed and

3. Speed sum = meeting distance ÷ meeting time

4. Meeting distance = A distance +B distance.

5. the speed of a = meeting distance ÷ meeting time-the speed of b.

6. the distance of a = the distance of meeting-the distance of b.

Second, the issue of the meeting.

Two objects start from two places and walk in opposite directions. After some time, they are bound to meet on the road. This kind of problem is called meeting problem. The problem of meeting is to study the relationship between speed, time and distance. It is different from the general travel problem in that it is not the movement of an object, so the speed it studies includes the speed of two objects, that is, the sum of speeds.

Extended data:

Classification of travel problems

1, follow the question

The chasing and meeting problems involved in the movement of two objects on the same straight line or closed figure are usually classified as chasing problems. This kind of problem often appears in exams, and it is a big kind of problem in travel.

Step 2 encounter problems

When many objects are close to each other, we usually find the time of meeting or the whole journey.

3. The problem of running water.

The boat itself is dynamic, even if the water doesn't flow, it has its own speed, but in flowing water, it is either pushed by running water or by running water, so that the speed of the boat changes in running water, while bamboo rafts and others have no speed, and its speed is the speed of water.

4. Train timetable problem

The length of the train actually has its own length, which is the characteristic of the train travel problem.

5, the clock problem

The clock problem can be regarded as a special problem that two people catch up or meet in a circular orbit, but the two "people" here are the minute hand and the hour hand of the clock respectively. However, in many clock problems, we often encounter all kinds of "strange clocks" or "broken clocks", whose hour hand and minute hand move at different angles from conventional clocks, which requires us to learn to analyze different problems independently.

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572020-06-26

What are the science and engineering majors in universities?

Science and engineering majors: mathematics and applied mathematics, information and computing science, physics, applied chemistry, biotechnology, geology, atmospheric science, theoretical and applied mechanics, electronic information science and technology, environmental science, mining engineering, petroleum engineering, metallurgical engineering, mechanical design and manufacturing and its automation, architecture, etc. 1. Architecture major Architecture is a discipline that focuses on learning how to design architecture and at the same time learning related basic technology courses. The main content of learning is to carry out architectural design from plane, facade and its internal and external space from scratch according to the requirements of room function, building type, technology and materials used in building construction. 2. Petroleum Engineering Major The petroleum engineering major trains senior specialized technical personnel with basic engineering theory and professional knowledge of petroleum engineering, who can engage in engineering design, engineering construction and management, applied research and scientific and technological development in oil and gas drilling engineering, oil production engineering, reservoir engineering and reservoir evaluation in the field of petroleum engineering, and obtain basic training for petroleum engineers. 3. Environmental Science Major Environmental Science majors cultivate basic theories, basic knowledge and basic skills of environmental science. Students in this major mainly study the basic theory and knowledge of environmental science and receive basic training in applied basic research, applied research and environmental management. Have good scientific literacy and certain teaching, research, development and management abilities, master the methods of environmental monitoring and environmental quality evaluation, and have basic skills of environmental planning and management. 4. The major of Information and Computing Science was originally named "Computational Mathematics", 1987 was renamed as "Computational Mathematics and Its Application Software", and 1998 was renamed as "Information and Computing Science" by the Ministry of Education. It is a mathematics major that combines mathematics with information and computer management. 5. Physics majors train senior professionals who master the basic theories and methods of physics, have good mathematical foundation and experimental skills, and can engage in scientific research, teaching, technology and related management in physics or related science and technology fields. Baidu Encyclopedia-Architecture Baidu Encyclopedia-Petroleum Engineering Baidu Encyclopedia-Environmental Science Baidu Encyclopedia-Information and Computing Science Baidu Encyclopedia-Physics

95 browse 1788520 19-04-20

What is a science and engineering discipline?

Science and engineering disciplines refer to science and engineering. Science and engineering is a vast field, including physics, chemistry, biology, engineering, astronomy, mathematics and various applications and combinations of the first six categories. Neo-Confucianism is an important discipline in the education of China University, which refers to the study of the basic laws of natural material movement. After graduating from university science, you will generally become a bachelor of science. Together with literature, engineering, pedagogy and history, it constitutes the discipline system of higher education in China. Science research covers a wide range, and undergraduate majors usually include: mathematics and applied mathematics, information and computing science, physics, applied physics, chemistry, applied chemistry, biological science, biotechnology, astronomy, geology, geochemistry, geographical science, resources, environment and urban-rural planning and management, geographic information system, geophysics, atmospheric science, applied meteorology, marine science, marine technology, theoretical and applied mechanics, optics and material physics. Engineering refers to the general term of engineering disciplines. Including instrumentation, energy, electric power, electrical information, transportation, marine engineering, light industry, textiles, aerospace mechanics, biological engineering, agricultural engineering, forestry engineering, public security technology, plant production, geology and mineral resources, machinery and food weapons, civil engineering, water conservancy surveying and mapping, environment and safety, chemical industry and pharmacy.

9 Browse 4 1220 16-08-29

Do science and engineering majors have high requirements for mathematics?

Science and engineering do have higher requirements for mathematics, and mathematics must be tested in the postgraduate entrance examination. As for your major, unfortunately, my major is also a kind of design, but we don't call it a designer, we call it an engineer, so you can guess what I'm about. We studied three mathematics, namely calculus, matrix and probability. This should be the most demanding mathematics difficulty in the university except mathematics major. Do you think you can accept it? Mechanical accidents should also be these three courses, and the information may be better, but this kind of major requires extremely high English, so you should pay attention. As for chemistry, I'm not sure. However, according to my experience in chemistry summer camp, there is nothing too high for mathematics, but learning chemistry requires a lot of logic. Learning mathematics well is very helpful to cultivate logical thinking.

14 browse 7652016-12-01

Science and engineering problems?

Many students don't master the learning method correctly, some know its importance but can't learn the essentials, while others fall into the sea of questions and are at a loss, resulting in unsatisfactory academic performance. Therefore, when we study mathematics, it is necessary to master knowledge, skills, training ability and exercise into good learning psychological quality, grasp the key learning stage, finally master learning methods and form comprehensive learning ability. Some main problems in learning: 1, correctly understand and master some basic concepts, laws, formulas and theorems of mathematics when reading books, and master their internal relations. Because science and engineering is a discipline with strong coherence and logic, mastering every concept, law, formula and theorem we have learned correctly can lay a good foundation for future study. If we encounter difficulties in learning a certain content or solving a certain problem, it is probably because we have not mastered some basic knowledge related to it. Therefore, we should pay attention to leak detection, find problems and solve them in time, and strive to find a problem and solve it in time. Only with a solid foundation will our grades improve. 2. Self-cultivation of mathematical operation ability and good study habits. After every exam, we often hear some students say: I was careless in this exam again. One of the most careless phenomena is the error caused by skipping steps, and it is repetitive. In fact, this is the psychology of quick success with poor study habits and poor mathematical operation skills. You know, every step of a math problem is completed by using certain laws. If a step is ignored in the process of solving a problem, it will happen that the rules of this step are not applied correctly, which will lead to the wrong solution. Therefore, the improvement of computing ability is basically to understand "arithmetic", not only to know how to calculate, but also to know why to calculate like this. This is what we often say, we should know what it is and why, so that we can grasp the direction, mode and procedure of operation and complete it step by step seriously, and the operation ability can be improved step by step. Students, please note that if you have the above-mentioned truancy, you should correct it in time. Otherwise, after a long time, you will have a fear of making mistakes before you start to solve the problem, and the more mistakes you make, the more you make. 3. Pay attention to the process of knowledge acquisition and cultivate the ability of abstract, general analysis, synthesis and reasoning. When teachers explain formulas, theorems and concepts in class, they usually reveal their formation process, but this process is most easily ignored by students. Some students think: I just need to understand the theorem itself, and then use it, without knowing how they got it. This idea is wrong. Because the teacher is explaining the formation and occurrence of knowledge, he is explaining the thinking process of a problem and revealing a way of thinking and method to solve the problem, including the ability of abstraction, general analysis, synthesis and reasoning. If we don't pay attention to it, we actually miss an opportunity to learn from it, exercise and develop our logical thinking ability. 4. Grasp learning at the beginning of the semester. Learning depends on perseverance, but at the same time, we notice that learning at the beginning of the new semester is very important and plays an important role in connecting the preceding with the following. The holiday is over, the new semester begins, and the students have to devote themselves to the new study life again. During the short holiday, students will feel much more relaxed. At the beginning of school, you may not feel so nervous, but our study needs to start from the beginning of the semester. It is very important to pay close attention to the initial study. At the beginning of the semester, students often feel relaxed because of the lack of content and homework. However, this is a good time for us to study. On the one hand, there is a connection between before and after knowledge. Confucius once said, "Review the past and learn the new". We can use this time to review what we have learned before, so as to learn new knowledge better. On the other hand, students with poor foundation can also use this time to make up for the shortcomings in their past studies, which is also beneficial to the study of new knowledge. At the beginning of the semester, although we learned a little, it was not easy to really digest it all. Then you must take time to consolidate until you understand everything you have learned. From this point of view, although it is the beginning of the new semester, we still can't relax. A good beginning will lead to a good result. The improvement of academic performance and the mastery of learning methods are inseparable from students' good study habits, so let's discuss good study habits together at last. Good study habits include: listening, reading, thinking and doing homework. Listening: We should grasp the main contradictions and problems in class, think synchronously with the teacher's explanation as much as possible, and take notes when necessary. Every time after class, we should think deeply and summarize, so as to achieve one lesson at a time. Reading: When reading, you should carefully scrutinize and understand every concept, theorem and law. For example, you should learn from others through links with similar reference books, so as to increase your knowledge and develop your thinking. Thinking: Learn to think, explore some new methods after solving problems, learn to think from different angles, and even change conditions or conclusions to find new problems. After a period of study, you should sort out your thoughts and form your own thinking rules. Homework: review your homework first, think before you start writing, and grasp a large piece of a kind of problem. You should do your homework carefully and standardize your writing. Only in this way can you learn math well. In short, in the process of learning, we should realize the importance of learning, give full play to our subjective initiative, pay attention to small details, develop good study habits, and cultivate the ability to think, analyze and solve problems. !

4 browse 122

What are the science and engineering majors with low requirements for mathematics?

Yes, science and engineering students must study mathematics. In particular, physics courses such as electronic information technology pay more attention to mathematics learning, and the course will be more difficult. But if you want to make math simpler, you can study arts and sciences, such as economic management, and math will take care of liberal arts students. The content is relatively simple. Hehe, I hope it works for you. You can keep asking me questions.

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