radical
The √ is called a radical. The of the radical symbol is the first letter “r” of the Latin radix, which “root (http://planetmath.org/NthRoot)”.
There is other terminology that is related to radicals: In the expression 3√x, x is the radicand and 3 is the index.
The index of a radical is usually an integer at least as large as two; however, if the index is two, it is usually not written. Moreover, if a radical does not have a written index, it is understood to be two, in which case the radical denotes a square root.
A radical expression is an expression that involves a radical.
One can use fractional powers instead of the radical symbol via n√x=x1n. This practice of avoiding the radical symbol may be due to typesetting issues.
| Title | radical |
| Canonical name | Radical12 |
| Date of creation | 2013-03-22 17:06:00 |
| Last modified on | 2013-03-22 17:06:00 |
| Owner | Wkbj79 (1863) |
| Last modified by | Wkbj79 (1863) |
| Numerical id | 22 |
| Author | Wkbj79 (1863) |
| Entry type | Definition |
| Classification | msc 30-00 |
| Classification | msc 12D99 |
| Classification | msc 00A05 |
| Synonym | radical symbol |
| Related topic | Radical5 |
| Related topic | EvenEvenOddRule |
| Related topic | NthRoot |
| Defines | radicand |
| Defines | index |
| Defines | radical expression |