Re: Complex numbers in Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg61669] Re: [mg61647] Complex numbers in Mathematica*From*: "Carl K. Woll" <carlw at wolfram.com>*Date*: Tue, 25 Oct 2005 01:28:03 -0400 (EDT)*References*: <200510250107.VAA16788@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

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

**References**:**Complex numbers in Mathematica***From:*per@RQNNE.invalid (Per Rønne)