Evaluate Complex Numbers: \sqrt{\frac{1+j}{4-8j}}

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SUMMARY

The discussion focuses on evaluating the complex number \(\sqrt{\frac{1+j}{4-8j}}\) and finding its real and imaginary components. The user arrives at the expression \(\sqrt{-\frac{1}{20} + \frac{3}{20}j}\) but struggles with converting it to polar form due to the magnitude not being one. The solution involves factoring out a real number from the complex expression to achieve unit magnitude, allowing for the application of Euler's identity.

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Homework Statement



Evaluate (find the real and complex components) of the following numbers, in either rectangular or polar form:

\sqrt{\frac{1+j}{4-8j}}

Homework Equations





The Attempt at a Solution



I get to here and am not sure where to go from here

\sqrt{-1/20+3/20j}

I noticed that I can't used euler's identity here because (-1/20)^2+(3/20)^2 is not one. Thanks for any help you can provide
 
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This would be a good time to change -1/20+3j/20 to polar form.
 
GreenPrint said:
I noticed that I can't used euler's identity here because (-1/20)^2+(3/20)^2 is not one.
Can you factor out a real number from -1/20 + 3i/20 so that what remains has unit magnitude? i.e. write it in the form

\frac{-1}{20} + \frac{3i}{20} = r(a + ib)

where a^2 + b^2 = 1
 

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