Is there a formula to find the square root of a complex number? I can't find it anywhere... Thanks.
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See... de Moivre's formula - Wikipedia, the free encyclopedia
... 'Applications'... a complex number has two distinct square roots...
The easiest way is to convert the complex number to exponential form, because .
Note that this only gives you one of the square roots, but you can use the fact that the roots will be evenly placed around a circle to find the other.
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