Re: "+ -" in an output line?

*To*: mathgroup at smc.vnet.net*Subject*: [mg52294] Re: "+ -" in an output line?*From*: Peter Pein <petsie at arcor.de>*Date*: Sun, 21 Nov 2004 07:23:32 -0500 (EST)*References*: <cnn1b0$8rq$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

AES/newspost wrote: > The input > > In[13]:= > Series[-I q s - I p Sqrt[K1^2 - s^2], {s, 0, 1}] > > gives > > Out[13]= > -I Sqrt[K1^2] p + - I q s + O[s^2] > > whereas > > In[14]:= > Series[-I q s - I p Sqrt[K1^2 - s^2], {s, 0, 1}] // Normal > > gives > > Out[14]= > -I Sqrt[K1^2] p - I q s > > What's that "+ -" doing in Out[13] ? Is this normal? > 3.6.2 Advanced Topic: The Representation of Power Series in the Mathematica book. -- Peter Pein 10245 Berlin