Re: how to make Sum[n,{n,1,5}] to print 1+2+3+4+5? HoldForm?
- To: mathgroup at smc.vnet.net
- Subject: [mg79387] Re: [mg79353] how to make Sum[n,{n,1,5}] to print 1+2+3+4+5? HoldForm?
- From: "Thomas Dowling" <thomasgdowling at gmail.com>
- Date: Wed, 25 Jul 2007 06:06:38 -0400 (EDT)
- References: <200707250611.CAA22292@smc.vnet.net>
Hello,
I suppose you could use:
r = Table[n, {n, 1, 5}]
and then use either
Apply[Plus, r]
or
Total[r]
Tom Dowling
On 7/25/07, Nasser Abbasi <nma at 12000.org> wrote:
>
> hi, I am using version 6
>
> what is the trick to make Sum[] just print the terms first, before
> adding them? Say I want to do
>
> r= Sum[n,{n,1,5}]
>
> But I want to see 1+2+3+4+5, i.e. the terms printed out before they
> are actually added.
>
> then later I can do Evaluate[r] or N[r] something like this to get it
> to actually do the sum.
>
> I tried the different Hold commands, but non seems to do it.
>
> thanks,
> Nasser
>
>
>
- References:
- how to make Sum[n,{n,1,5}] to print 1+2+3+4+5? HoldForm?
- From: Nasser Abbasi <nma@12000.org>
- how to make Sum[n,{n,1,5}] to print 1+2+3+4+5? HoldForm?