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Re: Complex numbers in Mathematica


Per Rønne wrote:
> If I write:
> 
> In[8]=Factor[(5 - 3I) + (-4 + I)x + (1 - I)x^2]
> 
> I get
> Nonreal::"warning": "Nonreal number encountered."
> Out[8]= Nonreal
> 
> The same with Sqrt[-1].
> 
> Why doesn't it show the complex numbers? According to the books it
> should - is it a matter of preferences set?
> 
> I'm using Mathematica Teacher's Edition 1.1 on MacOS X.

It appears that you have the package Miscellaneous`RealOnly` loaded.

Carl Woll
Wolfram Research


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