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Author Comment/Response
Bill Simpson
09/04/12 10:29pm

In Response To 'Re: Re: Collecting terms in an expression'
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Unfortunately there are too many ... in your description for me to tell whether you want me to ... or want me to ... with ... and get ...

If everyone would include a small notebook with their question that included just a large enough example so that readers could understand what was desired and so that the answer, whatever that might be, would almost certainly provide what was needed, and not have the notebook be so large and complicated that most readers would not bother trying to figure what the problem really was.

Is this anything like what you are looking for?

In[1]:= expr=Exp[a Fx[1]^2+a Fy[1]^2+a Fz[1]^2+b Fx[2]^2+b Fy[2]^2+b Fz[2]^2+c Fx[3]^2+c Fy[3]^2+c Fz[3]^2];

In[2]:= expr//.(_[n_]^2)..->f[n]^2

Out[2]= E^(3*a*f[1]^2 + 3*b*f[2]^2 + 3*c*f[3]^2)

Note that ".." in that is a part of Mathematica pattern matching and is not my just substituting ... for things I don't bother to write. But this is more advanced pattern matching and not what someone would usually start with.

If this isn't what you want then I suggest you include an example that has at least three of each kind of term and at least three different terms of that along with a carefully manually constructed example with no small errors that show exactly what the result should be.

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Subject (listing for 'Collecting terms in an expression')
Author Date Posted
Collecting terms in an expression Sami 09/02/12 3:01pm
Re: Collecting terms in an expression Bill Simpson 09/03/12 11:34pm
Re: Re: Collecting terms in an expression Sami 09/04/12 12:48pm
Re: Re: Re: Collecting terms in an expression Bill Simpson 09/04/12 10:29pm
Re: Re: Re: Re: Collecting terms in an expression Sami 09/06/12 00:45am
Re: Re: Re: Re: Re: Collecting terms in an expr... Bill Simpson 09/06/12 11:36am
Re: Re: Re: Re: Collecting terms in an expression Sami 09/06/12 01:14am
Re: Re: Re: Re: Re: Collecting terms in an expr... Bill Simpson 09/07/12 2:57pm
Re: Re: Re: Re: Re: Re: Collecting terms in an ... Sami 09/08/12 03:26am
Re: Re: Re: Re: Re: Re: Re: Collecting terms in... Sami 09/11/12 8:12pm
Re: Re: Re: Re: Re: Re: Re: Re: Collecting term... Bill Simpson 09/14/12 03:31am
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