Calculates the square root of a number.
A number's square root can be multiplied by itself to produce the original number. For example, sqrt(9) returns 3 because 3 × 3 = 9. sqrt() always returns a positive value. sqrt() doesn't work with negative arguments such as sqrt(-9).
Examples
Syntax
sqrt(n)
Parameters
n
Number:
non-negative number to square root.
Returns
Number: square root of number.
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