Re: ComplexExpand and FontSize

*To*: mathgroup at smc.vnet.net*Subject*: [mg9159] Re: ComplexExpand and FontSize*From*: Paul Abbott <paul at physics.uwa.edu.au>*Date*: Thu, 16 Oct 1997 03:38:00 -0400*Organization*: University of Western Australia*Sender*: owner-wri-mathgroup at wolfram.com

YLEFFLER at UCIS.VILL.EDU wrote: > After seeing some of the questions in the news group I have one about > the Simplify command. It doesn't seem to know DeMoivre's theorem. For example > in trying to work with Spherical Harmonics you often want the Sin and Cos > combinations of a +/- pair but you cannot get this without typing it in. I think you are looking for ComplexExpand, e.g., In[1]:= SphericalHarmonicY[2, -1, t, p] Out[1]= 1 15 - Exp[-I p] Sqrt[----] Cos[t] Sin[t] 2 2 Pi In[2]:= ComplexExpand[%] Out[2]= 1 15 - Sqrt[----] Cos[p] Cos[t] Sin[t] - 2 2 Pi 1 15 - I Sqrt[----] Cos[t] Sin[p] Sin[t] 2 2 Pi > I have a second question about the Notebook font size. I would like to > change it but dont know the file. I have looked in 3.0 book and in the 2.2 > Front End manual but neither seems to mention it. There are many ways. To change all cells in a Notebook, it is best to edit the StyleSheet (under the Format menu). Alternatively, you might change the screen magnification or use Format/Screen Style Environment/Presentation. Cheers, Paul ____________________________________________________________________ Paul Abbott Phone: +61-8-9380-2734 Department of Physics Fax: +61-8-9380-1014 The University of Western Australia Nedlands WA 6907 mailto:paul at physics.uwa.edu.au AUSTRALIA http://www.pd.uwa.edu.au/~paul God IS a weakly left-handed dice player ____________________________________________________________________