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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


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