Maeckes logo

<    1      2      3    >


Algebraic number

An algebraic number is a root of an equation in the form

in which the coefficients a0a1, ... an are all integers.

 


Examples

1. All rational numbers are algebraic because the fraction a / b is a solution of bx – a = 0.
2. The irrational number √2 is algebraic because it is a solution of x2 − 2 = 0.
3. The imaginary unit i is algebraic, as it is a root of x 2 + 1 = 0.

 


Deutsch   Español   Français   Nederlands