1. real number, real - any rational or irrational number
   --₁ is a kind of complex number, complex quantity, imaginary number
   --₁ has particulars:

   scalar product, inner product, dot product; rational number; irrational number

Description:

A real number is a mathematical term representing any number on the real number line, including both rational and irrational numbers. Real numbers can be positive, negative, or zero, and can be expressed in decimal notation.

Senses and Usages:

1. Sense: Mathematical

   Usage: In mathematics, real numbers are used to solve various equations and represent quantities in the real world.

2. Sense: Popularity

   Usage: Real numbers are widely used in everyday calculations, such as measuring distances, weights, temperatures, and time.

3. Sense: Local Notation

   Usage: In some countries, a comma is used as a decimal separator in real numbers instead of a period.

Sample Sentences:

1. The value of π (pi) is an example of an irrational real number.
2. She used real numbers to calculate the velocity of the car.
3. Real numbers are essential in understanding the concept of continuity in calculus.
4. The temperature today is a real number of -5 degrees Celsius.

Possible Related Products:

• Real Numbers Books on Amazon
• Mathematics Textbooks on Amazon
• Scientific Calculators on Amazon