Re: Units question

*To*: mathgroup at smc.vnet.net*Subject*: [mg115503] Re: Units question*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Thu, 13 Jan 2011 03:24:51 -0500 (EST)

Even after loading the Units package, Mathematica doesn't know that Meter and Second are positive. My naive sense is that this is just plain stupid. Am I missing something here? On 1/12/2011 4:07 AM, Bob Hanlon wrote: > Simplify[Sqrt[Meter^2/Second^2] Second/Meter^2, > {Meter> 0, Second> 0}] > > 1/Meter > > > Sqrt[Meter^2/Second^2] Second/Meter^2 // PowerExpand > > 1/Meter > > > Bob Hanlon > > ---- Ted Sariyski<tsariysk at craft-tech.com> wrote: > > ============= > Hi, > Working with units I get correct result: > > Sqrt[Meter^2/Second^2] Second)/Meter^2 > > How to tell Mathematica to simplify the result to Meter^-1? > Simplify and FullSimplify doesn't do the job. > Thanks in advance, > --Ted > > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305