1. Determine the problem: First, we need to know what the problem is. This may be a question about speed, distance, time, cost, etc.
2. Build a model: Then, we need to build a mathematical model to describe this problem. This usually involves selecting one or more functions to represent different parts of the problem.
3. Draw the quadrant coordinate map: Next, we can draw the quadrant coordinate map with the function we choose. On the x axis, we can represent the value of independent variables, while on the y axis, we can represent the value of functions. In this way, we can see the behavior of the function under different independent variable values.
4. Analyze the graph: By observing the quadrant coordinate graph, we can get some important information about the function behavior. For example, we can see where the maximum and minimum values of the function are, whether the function is increasing or decreasing, and the changing trend of the function.
5. Solve the problem: Finally, we can use the information obtained from the quadrant coordinate diagram to solve the problem. For example, if we are looking for the production capacity to minimize the cost, then we can determine this production capacity by finding the minimum value of the cost function.
Generally speaking, the quadrant coordinate diagram of function is a powerful tool, which can help us better understand and solve practical problems. By using it correctly, we can get more accurate solutions and make better decisions.