Re: Hold & Evaluate

*To*: mathgroup at smc.vnet.net*Subject*: [mg129907] Re: Hold & Evaluate*From*: Bob Hanlon <hanlonr357 at gmail.com>*Date*: Mon, 25 Feb 2013 02:20:18 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net*References*: <20130224043140.94A9B6873@smc.vnet.net>

m = 5; seq = Table[ ToString[n] <> "/" <> ToString[1.1 n + 0.1], {n, m}] {"1/1.2", "2/2.3", "3/3.4", "4/4.5", "5/5.6"} seq // ToExpression {0.833333, 0.869565, 0.882353, 0.888889, 0.892857} Bob Hanlon On Sat, Feb 23, 2013 at 11:31 PM, =C5 er=C3=BDch Jakub <Serych at panska.cz> wrote: > Dear mathgroup, > I would like to generate sequence in the form: > > 1/1.2, 2/2.3, 3/3.4, 4/4.5, etc. > > It is very simple by a Table function: > > Table[n/(n + 0.1 (n + 1)), {n, 1, 15}] > > but as there are real numbers in denominators, Mathematica evaluates all and generates something like: > > {0.833333, 0.869565, 0.882353, 0.888889, 0.892857, 0.895522, etc.} > > How to evaluate numerators and denominators separately and print the sequence in that "fraction like" form? > > I tested: > > #[[1]]/#[[2]] & /@ Table[{n, n + 0.1 (n + 1)}, {n, 1, 15}] and than used Hold[] and Evaluate[]: > > Hold[Evaluate[#[[1]]]/Evaluate[#[[2]]]] & /@ > Table[{n, n + 0.1 (n + 1)}, {n, 1, 15}] > > But it doesn't work as the Hold has "veto" power over any evaluation. > > Thanks in advance for any idea, how to do it > > Jakub >

**References**:**Hold & Evaluate***From:*Šerých Jakub <Serych@panska.cz>