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: [mg102993] Re: [mg102978] re-grouping expressions in mathematica
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Thu, 3 Sep 2009 07:27:17 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

q1 = 3 (2 + 4 a + 5 b) + 5 (a - 0.4 b);

Collect[q1, a]

17 a+13. b+6

Collect[q1, b]

17 a+13. b+6

Collect[q1, {a, b}]

17 a+13. b+6


Bob Hanlon

---- 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



  • Prev by Date: Re: contourplot in xy plane of Graphics3D
  • Next by Date: Re: BoxWhiskerPlot - BoxLabels and FrameTicks won't work
  • Previous by thread: Re: re-grouping expressions in mathematica
  • Next by thread: Re: re-grouping expressions in mathematica