Re: How to prevent from simplification?
- To: mathgroup at smc.vnet.net
- Subject: [mg52475] Re: How to prevent from simplification?
- From: David Bailey <dave at Remove_Thisdbailey.co.uk>
- Date: Sun, 28 Nov 2004 01:07:14 -0500 (EST)
- References: <co98i8$h2k$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Christian Auner wrote: > How can I substitute values into an expression and prevent it from > beeing evaluated and simplified? > > Assume I have an expression like > > a + b/c > > and I want to substitute values for a,b and such that the result looks > like > > number + number > > That is the evalution stops right before the addition. > > I already tried HoldForm but it didn't work. > Hi, Well HoldForm certainly worked for me: sss = HoldForm[a + b/c] a+b/c sss /. {a -> 7, b -> 4, c -> 2} 7+4/2 (I had to edit the output slightly because InputForm shows the HoldForm wrapper, and StandardForm displays the fractions with a vertical bar). David Bailey