Re: How to express continued sum?
- To: mathgroup at smc.vnet.net
- Subject: [mg73449] Re: How to express continued sum?
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Fri, 16 Feb 2007 05:23:21 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <er3hbm$f9e$1@smc.vnet.net>
oicqgogogo at sina.com wrote:
> I want to know how to get the continued sum expression by mathematica?
> Such
> as:
> sigma(x=0..20)sigma(y=0..20)sigma(z=0..20)f(x,y,z)
>
> Thanks!
>
>
In Mathematica syntax this is
Sum[f[x, y, z], {x, 0, 20}, {y, 0, 20}, {z, 0, 20}]
See http://documents.wolfram.com/mathematica/functions/Sum
Regards,
Jean-Marc