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 , is the radicand and 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 . This practice of avoiding the radical symbol may be due to typesetting issues.
|Date of creation||2013-03-22 17:06:00|
|Last modified on||2013-03-22 17:06:00|
|Last modified by||Wkbj79 (1863)|