Re: Simplifying Exponents
- To: mathgroup at smc.vnet.net
- Subject: [mg43914] Re: [mg43899] Simplifying Exponents
- From: "Peter Pein" <nospam at spam.no>
- Date: Sat, 11 Oct 2003 01:33:33 -0400 (EDT)
- References: <200310100706.DAA19540@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi Wes, I can not reproduce the described behaviour: In[1]:= $Version a*Exp[I*t*(-4 + x) - I*t*x]//Simplify Out[1]= 4.0 for Microsoft Windows (July 16, 1999) Out[2]= \!\(a\ \[ExponentialE]\^\(\(-4\)\ \[ImaginaryI]\ t\)\) Maybe some of the symbols you're using look same but aren't. What does FullForm[expression] display? Or did you use Hold[] somwhere in your code? Peter Pein, Berlin petsie at arcAND.de replace && by || to write to me ----- Original Message ----- From: "wes" <wesh at acm.org> To: mathgroup at smc.vnet.net Subject: [mg43914] [mg43899] Simplifying Exponents > I am trying to generate rows of a determinant for a Hill's DE. To > do this I generate a series of exponentials of the typical form > > a Exp[I t(-4 + x) - I t x] > > where the coefficient a and integer 4 vary from term to term. There > also may be more terms in the exponent. > > Mathematica resolutely refuses to simplify the exponents, which in > the above case would result in > > a Exp[-4 I t]. > > There are several terms which have different extended exponents but > the same simplified exponents. > > To generate the determinant I need to collect all of the terms having > the same simplified exponent. > > Any advice gratefully received. > > Wes >
- References:
- Simplifying Exponents
- From: wes <wesh@acm.org>
- Simplifying Exponents