Re: Sum
- To: mathgroup at smc.vnet.net
- Subject: [mg55225] Re: Sum
- From: "Peltio" <peltio at trilight.zone>
- Date: Thu, 17 Mar 2005 03:28:50 -0500 (EST)
- References: <d192qe$ng4$1@smc.vnet.net>
- Reply-to: "Peltio" <peltioNOSPAM at despammed.com.invalid>
- Sender: owner-wri-mathgroup at wolfram.com
"mjumbo" wrote
>x = Exp[-k]
>Sum[x, {k, 0, Infinity}]
>
>don't? What should I do to make it work?
Sum has the attribute HoldAll.
So you need to evaluate the expression x passed to it if yuo want it to see
what's inside it.
Sum[Evaluate[x], {k, 0, Infinity}]
cheers,
Peltio