1, the definition of the inverse number
The inverse number is a number that adds up to zero. In mathematics, if the sum of two numbers is zero, then the two numbers are opposite. On the number axis, two points with the same distance from the origin represent opposite numbers. By understanding the definition of reciprocal, we can better grasp the important concepts in mathematics and solve mathematical problems.
2. The characteristics of reciprocal
The opposite number is characterized by equal absolute values. It means that a number is positive, the opposite number is negative, a number is negative and the opposite number is positive. On the number axis, the reciprocal of a number is symmetrical with respect to the origin. The reciprocal of -3 is 3, and the absolute values are equal.
3. The operational nature of reciprocal
The addition of antonyms has some special properties. The sum of any number plus the reciprocal is zero, and the difference between any number MINUS the reciprocal is twice that number; The product of any two antonyms is a positive number. These properties are very useful in solving mathematical problems. When solving the equation, the unknowns in the equation can be expressed by reciprocal, which simplifies the calculation process.
Application field of reciprocal
1, economy and finance
In economics and finance, the concept of reciprocal is often used. In accounting, income and expenditure are opposite, income increases assets and expenditure decreases assets. In the financial market, buying and selling operations are also the opposite, buying to increase assets and selling to decrease assets.
2. Physics and Engineering
In the fields of physics and engineering, the concept of reciprocal often appears. The direction of current can be regarded as the direction of positive charge, while the direction of electron movement is the opposite. In circuit analysis, the opposite direction of current can be regarded as the increase or decrease of current.
3, the application of computer science
In computer science, the concept of reciprocal is also important. In computer graphics, the concept of reciprocal is needed to calculate the coordinates and rotation angle parameters of points. In the algorithm design, the concept of reciprocal is used to optimize the performance of the algorithm.