Imaginary number
| An Imaginary number is a real number multiplied by the imaginary unit i, which is defined by its property i2 = −1. The square of an imaginary number bi is −b2. For example, 5i is an imaginary number, and its square is −25. The number zero is considered to be both real and imaginary. | |
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| wikipedia:: Imaginary number |
Imaginary number
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Imaginary number