The fixed point problem is the main idea. For example, when moving at a certain speed, the position of the point can be indicated after setting the time; Another example is the moving point of a function. Try to set a variable, where y is represented by x as much as possible. You can use this point as the moving point to calculate.
Matters needing attention in moving point problem
The key to the problem of moving point is to seek quietness in motion. Read the stem carefully and extract key information from multiple conditions. Mathematical thinking is the idea of classification, sorting out and classifying the extracted key information. The combination of numbers and shapes and the transformation of ideas, and the combination of numbers and shapes of key information make mathematical problems clear at a glance. Combining the above ideas, we can effectively solve the problem of middle school relocation.
The key to solving the problem of moving point is to grasp the moving point. It is necessary to turn the moving point into a static one, and find the breakpoint (side length, moving point speed, angle and the equivalence relation of a given graph, etc.). ), establish the required equivalent algebra, break through the problem, find out the unknown and so on.