Real numbers are common numerical types in mathematics, including all rational numbers and irrational numbers. Among them, rational number is a number that can be expressed in the form of component number, and irrational number is a number that cannot be written in the form of rational number, such as π, E, etc. In real number, real number means the actual existence of exponential value, that is, it is not only the concept of imaginary number, but also has no practical significance.

Real numbers in real numbers represent an objective existence, and they have clear numerical values and meanings. In physics, many physical quantities are real numbers, such as length, mass and speed, and their existence can be obtained through experiments and observations. Similarly, real numbers are widely used in economics, statistics and other fields, because they have clear numerical values and meanings, which can help us better understand and describe things.

In addition, real number is also an important concept in mathematical research. In the field of real numbers, we can carry out various mathematical operations and reasoning, and draw a series of important conclusions and theorems. The reality in real numbers enables mathematics to better describe and explain various problems in the real world, and provides us with more accurate and rich tools and languages.

To sum up, real numbers are the actual existence and concrete significance of exponential values, and have a wide range of applications and important positions in science, economy, mathematics and other fields. With the development of science and technology and civilization, real numbers have been applied to more and more fields, providing important support and help for human beings to explore and understand the world.