Thursday, 18 August 2016

complex numbers - Square root of k

This can be a strange question but what is the result of $\sqrt1$ ?
I mean if we consider that a square root of a real number should always be greater or equal to zero the answer should be 1.
But if we write $1$ using complex numbers notation and then we use the formula for the n-th root we come up with two solutions $1$ and $-1$.

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