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Complex numbers in Mathematica

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  • Subject: [mg61647] Complex numbers in Mathematica
  • From: per at RQNNE.invalid (Per Rønne)
  • Date: Mon, 24 Oct 2005 21:07:04 -0400 (EDT)
  • Reply-to: spam at (Per Rønne)
  • Sender: owner-wri-mathgroup at

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.
Per Erik Rønne

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