Saturday, 28 June 2014

How to compute the norm of a complex number under square root?

How to compute the norm of a complex number under square root? Does the square of norm equal the norm of square:





z2=z2?




Let z=reiθ, then z2=reiθ2=reiθ2=re1/2iθ2=reiθ.
And
z2=(reiθ)2=r2e2iθ=reiθ.



I hope this is correct? Thank you.

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