Re: Reduce an expression into a given form
- To: mathgroup at smc.vnet.net
- Subject: [mg130943] Re: Reduce an expression into a given form
- From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
- Date: Tue, 28 May 2013 04:14:48 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Delivered-to: l-mathgroup@wolfram.com
- Delivered-to: mathgroup-outx@smc.vnet.net
- Delivered-to: mathgroup-newsendx@smc.vnet.net
Hello, I have an expression of the form N[a,b,c]/D[a,b,c] with a, b and c some parameters on which N and D depend. I have to transform it into something like A[a,b]/c with A that does not depend on c. Is there any function in Mathematica that can do that? Thanks a lot for any help. Francesco Hi, Francesco, To my knowledge there is no such function that will do it for any N and D. It is for the reason that the statement of problem you give above is much too general. Indeed, such a representation N[a,b,c]/D[a,b,c]= A[a,b]/c does not exist for any N and D, but only for some their combinations. However, if the expression N[a,b,c]/D[a,b,c] may be represented in the form you need, then it can be done within Mathematica. Whether or not it be easy, is another question. I suggest that you give the expressions in the explicit form. Have fun, Alexei Alexei BOULBITCH, Dr., habil. IEE S.A. ZAE Weiergewan, 11, rue Edmond Reuter, L-5326 Contern, LUXEMBOURG Office phone : +352-2454-2566 Office fax: +352-2454-3566 mobile phone: +49 151 52 40 66 44 e-mail: alexei.boulbitch at iee.lu