Services & Resources / Wolfram Forums / MathGroup Archive

MathGroup Archive 2009

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

Search the Archive

Re: collecting certain powers

  • To: mathgroup at
  • Subject: [mg97605] Re: collecting certain powers
  • From: Barış Erbaş <erbas.baris at>
  • Date: Tue, 17 Mar 2009 04:56:13 -0500 (EST)
  • References: <>

Dear Mathematica users,
I have a problem which may be straightforward, but I was unable to
find an answer.

The problem is this: I have an expression which contain many terms with
variables, t, \tau and 1/\lambda. I need to Collect all terms in powers of
1/\lambda, which I did. However, in the result I want the constant term to
disappear, i.e. after applying the command (either Collect, or a more
suitable one) I only want terms in powers of 1/\lambda.
Collect does not give me want I want. Also, is it possible to order the
obtained expression in terms of increasing (or decreasing) powers of the
variable. Mathematica seems to be ordering a little randomly.

Many Thanks,


  • Prev by Date: Re: setting discrete values for a function -- newbie
  • Next by Date: Re: setting discrete values for a function -- newbie
  • Previous by thread: Re: Don't understand the response
  • Next by thread: writing a function that would print the name of a passed variable