For example, the number pair (3,2) indicates that the position of the object is in the third row and the second column. Similarly, pairs (2 2,3) can also be used to indicate that the position of the object is in the second row and the third column.
In the plane rectangular coordinate system, the position of a point can be represented by several pairs. For example, the position of point A in the plane rectangular coordinate system is (3,2), that is, point A is located in the third row and the second column.
The position of the object can be easily found by the number pair. For example, if you want to find the location of a city on the map, you only need to find several provinces and urban areas where the cities are located.
In addition to representing the position of a point in a plane rectangular coordinate system, number pairs can also be used in other fields. For example, when arranging seats, you can use several pairs to represent everyone's position; In logistics, the position and order of goods can be represented by several pairs.
The role of number pairs:
1. Determine the position of the object: Through several pairs, the position of the object in the plane rectangular coordinate system can be accurately described. For example, the number pair (3,2) indicates that the position of the object is in the third row and the second column. Using number pairs, we can mark specific positions in plane rectangular coordinate systems such as maps, nautical charts and aviation charts.
2. Recording data: Digital pairs can be used to record and represent data. For example, in biology, the position and number of chromosomes can be represented by number pairs. In economics, stock price and trading volume can be represented by number pairs.
3. Calculate the distance: Digital pairs can also be used to calculate the distance. For example, in geography, the distance between two places can be calculated by calculating the distance between longitude and latitude pairs. In this way, the distance between different places can be calculated conveniently, which provides important support for logistics, navigation and other applications.