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<< Click to Display Table of Contents >> ROOTN (n-th root) |
Syntax:
ROOTN(Number [, n])
Description:
Returns the n-th root of a number. If n is omitted, the square root is returned (n=2).
n should be an integer. Digits to the right of the decimal point are ignored.
If n is even, Number must be ≥ 0.
Compatibility notes:
This function is not supported by Microsoft Excel. If you save a document in Excel format, all calculations using this function will be replaced by their last result as a fixed value.
Tip: Alternatively, the n-th root of a number can be calculated using the following Excel compatible function:
ROOTN(Number, n) equals POWER(Number, 1/n)
Example:
ROOTN(25) returns 5
ROOTN(-25) returns a #NUM! error value
ROOTN(125, 3) returns 5
ROOTN(-125, 3) returns -5
See also: