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 Question Deepak: How do I simplify this complex equation: z=1/(2^i)

Hi Deepak,

$\large \frac{1}{2^i}$ can be written $2^{-i}$ and Euler's formula says that for a real number $\theta$

$e^{i \theta} =cos \theta + i \sin \theta$

so you can simplify

$z = \frac{1}{2^i}$

if you can write $z$ in the form $e^{i \theta}.$

Since $z = 2^{-i}$ you can take the natural logarithm of each side to get

$log(z) = \log\left(2^{-i}\right) = -i \log(2)$

and applying the exponential function to each side to get

$z = e^{-i \log(2)} = e^{i[-\log(2)]}.$

Penny

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