Real number: Difference between revisions
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A '''real number''' is a number that falls on the real number line. It can have any value. Some examples of real numbers are:<math>1, 2, -23.25, 0, \frac{\pi}{\phi}</math>, and so on. Numbers that are not real are 3i, 3+2.5i, 3+2i+2j+k, i.e. complex numbers, and quaternions. | A '''real number''' is a number that falls on the real number line. It can have any value. Some examples of real numbers are:<math>1, 2, -23.25, 0, \frac{\pi}{\phi}</math>, and so on. Numbers that are not real are 3i, 3+2.5i, 3+2i+2j+k, i.e. complex numbers, and quaternions. | ||
The set of real numbers is denoted by <math>\mathbb{R}</math>. | |||
== See Also == | |||
*[[Natural number]] | |||
*[[Integer]] | |||
*[[Rational number]] | |||
*[[Irrational number]] | |||
*[[Complex number]] | |||
Revision as of 09:07, 22 June 2006
A real number is a number that falls on the real number line. It can have any value. Some examples of real numbers are:
, and so on. Numbers that are not real are 3i, 3+2.5i, 3+2i+2j+k, i.e. complex numbers, and quaternions.
The set of real numbers is denoted by 
.
