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Re: Expressions with ellipsis (...)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg93040] Re: Expressions with ellipsis (...)
  • From: dh <dh at metrohm.ch>
  • Date: Fri, 24 Oct 2008 02:32:10 -0400 (EDT)
  • References: <gdmsbd$jv$1@smc.vnet.net>


Hi David,

you can not simply invent your own syntax. Mathematica can not be used 

without reading the manual! For a sum the magic word is Sum:

Limit[Sum[(n-i)^2,{i,0,n-1}]/n^3,n->Infinity]

hope this helps, Daniel







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?

> 

> Thanks,

> David.

> 

> 





-- 



Daniel Huber

Metrohm Ltd.

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CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

Internet:<http://www.metrohm.com>




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