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Mathematics 21 Online
OpenStudy (anonymous):

Question on evaluating complex exponents...

OpenStudy (anonymous):

The complex numbers are a superset of the real numbers if I understand correctly, and any real number can be written as a complex number. If you take the expression:\[0^{2}\], this is equal to 0. However, if you rewrite the exponent as a complex number...\[0^{2+0i} = 0^{2}0^{0i}\] You run into a problem with 0^0i being indeterminate. How would you evaluate this? I've tried using \[0^{2}e^{\ln(0^{0i})} = 0^{2}e^{0i \ln(0)} = \cos(0\ln(0)) + i \sin(0\ln(0)) \] But ln(0) is undefined.

OpenStudy (unklerhaukus):

zero as a complex number can be written \[0=0+0i\]

OpenStudy (anonymous):

But I'm not trying to rewrite 0 as a complex number, I'm rewriting 2, the exponent, as a complex number and evaluating the expression, which seems to become indeterminate.

OpenStudy (unklerhaukus):

why are you trying to do that?

OpenStudy (anonymous):

Because it should work... why would 0^2 be defined but not 0^(2+0i)?

OpenStudy (unklerhaukus):

zero is a strange base

OpenStudy (anonymous):

My calculus 2 teacher couldn't answer it...

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