Imaginary NumberEdit
Imaginary Number is defined as

- $i={\sqrt {-1}}$

Mathematic OperationsEdit
- i + 0 = i
- i + i = 2i
- i + (-i) = 0

### SubtractionEdit

- i - 0 = i
- i - i = 0
- i - (-i) = 2i

### MultiplicationEdit

- i x 0 = 0
- i x i = i
^{2} = -1
- i x (-i) = -i
^{2} = 1

- i / 0 = Error
- i / i = 1
- i / (-i) = -1