Arithmetic/Types of Numbers/Imaginary Number

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Imaginary Number[edit]

An imaginary number is a number whose square is less than zero.

e.g.

j = \sqrt{-1}

Conjugate Number[edit]

-j = -\sqrt{-1}


Rules[edit]

1) j + j = 2j

2) j - j = 0

3) j x -j = -1

4) j / j = 1

5) j + (-j) = 0

6) j - (-j) = 2j

7) (-j) x (-j) = -j2 = 1

8) j / (-j) = -1