Square root calculator

1. A fourth root is a mathematical concept referring to a number b that is the fourth root of a number a, such that b⁴ = a.

2. A fourth root is the number obtained by multiplying a number by itself three times to get the original number. Fourth roots are commonly used in mathematics, physics, and engineering.

3. Properties of the fourth root:

(1) Uniqueness: For any positive number a, its fourth root is a unique positive number. For example, the fourth root of 16 is 2, because 2⁴ = 16;

(2) Negative numbers: Negative numbers also have fourth roots, but they are complex numbers. For example, the fourth roots of -16 are 2i and -2i, because (2i)⁴ = -16;

(3) Zero: The fourth root of 0 is 0, because 0⁴ = 0;

(4) Sign: The fourth root of a positive number is a positive number, and the fourth root of a negative number is a complex number.