The 5 In computer applications, squaring and other raising to a power is usually indicated by a ^ symbol. 5^2 = 5 * 5 = 25 The sqrt(25) = +5 and -5 However, in most applications, the negative root is ignored. In statistics, the square root of 25 is 5. Also remember that negative numbers do not have square roots (in the real number system).
sqrt(-25) is undefined or nonexistent or NaN (not a number) The square root of 25 can also be written 25 |

Return To Main Page |