The experience of the preview of "real number" in mathematics of the first volume of the eighth grade Try to have as many words as possible,

The experience of the preview of "real number" in mathematics of the first volume of the eighth grade Try to have as many words as possible,

Real numbers can be divided into rational numbers and irrational numbers, or algebraic numbers and transcendental numbers, or positive numbers, negative numbers and zero. The set of real numbers is usually represented by the letter R or R ^ n. R ^ n represents n-dimensional real number space. Real numbers are uncountable. Real numbers are the core research object of real analysis