The nth root is a and b are real numbers and n is a positive integer greater than 1. b is the nth root of a if b^n = a
| n is an even number | n is an odd number | |
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| 1. The nth root of a can find when a = 0 . 2. If a = 0 then the nth root of a = 0 3. If a > 0, the nth root of a always has 2 values, which are positive and negative. 4. If a < 0, the nth root of a can not find the real number. |
1. The nth root of a is always found for any real number a . 2. If a = 0 nth root of a = 0 3. If a > 0, the nth root of a has 1 and is a positive real number. 4. If a < 0, the nth root of a has 1 and is a negative real number. |