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 i (Unit Imaginary Number)

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i (Unit Imaginary Number)
The square root of minus 1.

The symbol is "i"

When you square any Real Number you always get a positive, or zero, result. For example 2×2=4, and (-2)×(-2)=4 as well.

So how can we square a number and get a negative result? Just "imagine" that we can, and it turns out that such a number, which may seem impossible, is actually useful and can solve real problems.


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