Differential of a complex number

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VaccumEnergy
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What is d/di(x+iy)?
 
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VaccumEnergy said:
What is d/di(x+iy)?

I'm guessing you meant

$$\frac{d}{di}(x+iy)=y$$

Assuming all the usual stuff in real and complex analysis apply here, of course.

DonAntonio
 
Isn't the imaginary unit a constant?
 
Klungo said:
Isn't the imaginary unit a constant?


I guess it is, yet the OP regards it as a variable in his question, so...

DonAntonio
 

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