MathGroup Archive 2009

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: re-grouping expressions in mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg103013] Re: [mg102978] re-grouping expressions in mathematica
  • From: "Elton Kurt TeKolste" <tekolste at fastmail.us>
  • Date: Thu, 3 Sep 2009 19:57:00 -0400 (EDT)
  • References: <200909030942.FAA21049@smc.vnet.net>

Peter

In the example provided, there is not much to do:

In[49]:= Simplify[q1]

Out[49]= 6. + 17. a + 13. b

Except, of course, that there is no equivalent expression in the target
pattern that you have specified (the constant, 6, does not fit)l

Assuming that your real question is not so simple: if you want to
collect terms together in a more complex expression, try

In[48]:= Collect[q1, {a, b}]

Out[48]= 6 + 17 a + 13. b

ekt

On Thu, 03 Sep 2009 05:42 -0400, "Peter Schreiber"
<schreiber.peter15 at gmail.com> wrote:
> Hi guys,
> How can I tell mathematica to re-write following expression q1 in the
> form of q2?
> 
> q1=3(2+4a+5b)+5(a-0.4b)
> 
> 
> q2=(...)a + (...)b
> 
> Best Regards,
> Peter
> 
Regards,
Kurt Tekolste



  • Prev by Date: Significant Digits in Mathematica in Excel
  • Next by Date: Re: Replace in operators
  • Previous by thread: re-grouping expressions in mathematica
  • Next by thread: Re: re-grouping expressions in mathematica