Re: PC auto-simplifies output, but mac doesn't

*To*: mathgroup at smc.vnet.net*Subject*: [mg125724] Re: PC auto-simplifies output, but mac doesn't*From*: Peter Russo <peter.russo at gmail.com>*Date*: Fri, 30 Mar 2012 04:33:34 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201203290758.CAA21741@smc.vnet.net> <4F74644E.8010009@math.umass.edu>

That's a good point, I didn't think about the time issue. Thanks for letting me know though, I'll consider it On Thu, Mar 29, 2012 at 10:22 AM, Murray Eisenberg <murray at math.umass.edu>wrote: > To have Simplify act upon every output, set the global variable $Post: > > $Post = Simplify; > > Then, for example, evaluating > > x^2 + 2x y + y^2 > > will produce output: > > (x + y)^2 > > But do you _really_ want to simplify everything? Especially since that can > cause a time penalty, something I should think you'd want to avoid while > using Mathematica for note-taking. > > To unset $Post, do this: > > $Post = . > > > > > > On 3/29/12 9:42 AM, Peter Russo wrote: > >> I figured that there shouldn't be a difference. The person on the PC must >> have accidentally set it to simplify without knowing it. How do you get >> Simplify to be applied to all outputs? That could be very useful, but I >> haven't been able to find it anywhere. Thanks >> >> On Thu, Mar 29, 2012 at 9:31 AM, Murray Eisenberg<murray at math.umass.edu >> >wrote: >> >> There really should not be any difference between the two platforms -- >>> unless possibly the expressions involved floating point reals. >>> >>> It is possible to cause Simplify to be applied to each and every output, >>> but there would be utterly no difference as to how a PC and a Mac would >>> be >>> set by default. >>> >>> On 3/29/12 3:58 AM, peter.russo at gmail.com wrote: >>> >>> In a class at my school, our professor gave us an example problem to >>>> try. >>>> The output is a long complicated expression, but when "Simplify[]" is >>>> used, >>>> it reduces to 0. Several people with macs all tried it, and we all got >>>> the >>>> same thing. However, one person with a PC tried it and their original >>>> output was simplified to 0. Is this an option that can be turned on on >>>> Macs, to auto-simplify the output? Thanks >>>> >>>> >>>> -- >>> 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 >>> >>> >> >> >> > -- > 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 > -- -Pete

**References**:**PC auto-simplifies output, but mac doesn't***From:*peter.russo@gmail.com