
What is i to the third power?
Cube (algebra)  Wikipedia, the free encyclopedia

** Cube (algebra) **
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"Third power" redirects here. For the band, see Third Power.
"Cubed" redirects here. For other uses, see Cube (disambiguation).
"Â³" redirects here. Its literal meaning is the numeral "3" in
superscript.
/y/ = /x/^3 for values of 0 â¤ /x/ â¤ 25.
In arithmetic and algebra, the *cube* of a number n is its third power: the
result of the number multiplied by itself twice:
/n/^3 = /n/ Ã /n/ Ã /n/.
It is also the number multiplied by its square:
/n/^3 = /n/ Ã /n/^2.
This is also the volume formula for a geometric cube with sides of length
n, giving rise to the name. The inverse operation of finding a number whose
cube is n is called extracting the cube root of n. It determines the side
of the cube of a given volume. It is also n raised to the onethird power.
Both cube and cube root are odd functions:
(â/n/)^3 = â(/n/^3).
The cube of a number or any other mathematical expression is denoted by a
superscript 3, for example 2^3 = 8 or (/x/ + 1)^3.
*Contents*
· 1 In integers
· 1.1 Base ten
· 1.2 Waring's problem for cubes
· 1.3 Fermat's last theorem for cubes
· 1.4 Sum of first /n/ cubes
· 1.5 Sum of cubes of numbers in arithmetic progression
· 1.6 Cubes as sums of successive odd integers
· 2 In rational numbers
· 3 In real numbers, other fields, and rings
· 4 History
· 5 See also
· 6 Notes
· 7 References
· 8 External links
*In integers[edit]*
A *cube number*, or a *perfect cube*, or sometimes just a
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