Re: Complex numbers in Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg61676] Re: Complex numbers in Mathematica*From*: per at RQNNE.invalid (Per Rønne)*Date*: Wed, 26 Oct 2005 01:01:32 -0400 (EDT)*References*: <200510250107.VAA16788@smc.vnet.net> <djkfq4$n1l$1@smc.vnet.net>*Reply-to*: spam at RQNNE.dk (Per Rønne)*Sender*: owner-wri-mathgroup at wolfram.com

Carl K. Woll <carlw at wolfram.com> wrote: > 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. Yes, and the problem has been solved. But why is the thread so often destroyed in this newsgroup? -- Per Erik Rønne

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