Difference between revisions of "Exponentiation"
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In mathematics, '''exponentiation''' is the name for the operation also called ''raising to a power.'' In simple cases, it refers to repeated multiplication. It is indicated by a ''superscript,'' a small number or expression written above the line: | In mathematics, '''exponentiation''' is the name for the operation also called ''raising to a power.'' In simple cases, it refers to repeated multiplication. It is indicated by a ''superscript,'' a small number or expression written above the line: | ||
| − | *2<sup>6</sup>, "two to the sixth power," 2·2·2·2·2·2 = 64 | + | *2<sup>6</sup>, "two to the sixth power," 2 · 2 · 2 · 2 · 2 · 2 = 64 |
| − | *''x''<sup>4</sup>, "''x'' to the fourth power," ''x''·''x''& | + | *''x''<sup>4</sup>, "''x'' to the fourth power," ''x'' · ''x'' · ''x'' · ''x'' |
| − | *''y''<sup>''n''</sup>, "''y'' to the n-th power," ''y''·''y''·''y''· ... ·''y'', where ''y'' appears ''n'' times. | + | *''y''<sup>''n''</sup>, "''y'' to the n-th power," ''y'' · ''y'' · ''y'' · ... · ''y'', where ''y'' appears ''n'' times. |
Revision as of 19:12, June 19, 2007
In mathematics, exponentiation is the name for the operation also called raising to a power. In simple cases, it refers to repeated multiplication. It is indicated by a superscript, a small number or expression written above the line:
- 26, "two to the sixth power," 2 · 2 · 2 · 2 · 2 · 2 = 64
- x4, "x to the fourth power," x · x · x · x
- yn, "y to the n-th power," y · y · y · ... · y, where y appears n times.