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MathGroup Archive 2003

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Re: Statistics: the i'th x in y=f(x)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39286] Re: Statistics: the i'th x in y=f(x)
  • From: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>
  • Date: Sun, 9 Feb 2003 04:50:45 -0500 (EST)
  • References: <b22jn1$6be$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

The correct thing has been printed out by Mathematica.

I think you meant to evaluate Product[1/(1 + Exp[x]), {x, n}]

--
Steve Luttrell
West Malvern, UK

"wuzzy" <mypcos at hotmail.com> wrote in message
news:b22jn1$6be$1 at smc.vnet.net...
> What is the Mathematica notation for the i'th x in y=f(x)
>
> -wuzzy
>
> for instance I'd like to find a simplified algebraic expression for
> Product[1/(1 + e^(x)), {i, n}]
>
> where there are n values of x.
>
> for the above, mathematica just prints out:
> [1/(1+e^(x)]^n
>




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