Re: Expressions with ellipsis (...)
- To: mathgroup at smc.vnet.net
- Subject: [mg93013] Re: Expressions with ellipsis (...)
- From: Szabolcs Horvat <szhorvat at gmail.com>
- Date: Fri, 24 Oct 2008 02:26:57 -0400 (EDT)
- Organization: University of Bergen
- References: <gdmsbd$jv$1@smc.vnet.net>
dch888 wrote:
> Hi Mathematica Friends,
>
> I want to do this:
>
> Limit[(n^2 + (n - 1)^2 + (n - 2)^2 + ... + 1)/n^3, n -> Infinity]
>
> But Mathematica barfs:
>
> expression cannot be followed by "...".
>
> Searching the help for 'ellipsis' gives me the Unicode 2026 character
> (i.e. ...).
>
> How can I get Mathematica to eval this limit?
>
Limit[Sum[k^2, {k, 1, n}]/n^3, n -> Infinity]