1, the vector method is the vector method, and there is no distinction in English, it is the vector. I don't know why, our math teacher and physics teacher just don't get along. You play your drum, I play my gong and always sing my own tune. Therefore, from the beginning, some students are doomed to be difficult to learn because of the teacher's mentality.
2. The basis of vector method comes from physical displacement analysis and stress analysis, emphasizing "equivalence".
That is, in plane geometry, the sum of two sides of a triangle is greater than the third side. In vector geometry, not the length of two sides adds up to the length of the third side, but the function of displacement is the same, and the resultant force of force is the same! When it comes to quantitative operation, it is still calculated by the previous method. Whether it is triangle method or parallelogram method, it is inseparable from the three theorems of sine theorem, cosine theorem and Pythagorean theorem.
If you give some examples of physics before talking about vectors, you will naturally accept them. Unfortunately, many math teachers have a very weak physical foundation.
3. Vector has its own set of specific algorithms. The initial algorithm can not be separated from decomposition, and the sum of components is found. For example, add up all the components in the X direction and all the components in the Y direction, and then calculate by Pythagorean theorem.
4. In addition, there are point multiplication and cross multiplication of vectors. It's a pity that high school only learns to multiply, not cross multiplication. Although it is much simpler, students' dialectical, systematic and logical thinking has been completely destroyed. The combination of vector and calculus is vector analysis, which involves ontology, so it is relatively deep and the general college graduates are basically blank. So the landlord doesn't have to worry, there is not much content, and no one is scared!
Say 1000, say 10000, the words here are not clear, the landlord has problems, Hi me, I will learn easily!