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MathGroup Archive 1996

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Re: Help on Function

  • To: mathgroup at
  • Subject: [mg3851] Re: Help on Function
  • From: Harald Berndt <haraldb at>
  • Date: Sat, 4 May 1996 02:11:38 -0400
  • Organization: University of California Forest Prodcts Lab
  • Sender: owner-wri-mathgroup at

Roberto Diego wrote:
> Hi people,
> Could you please help me? I4m trying to write a function (not procedure
> if possible) that works on a list such as {a1, a2, a3, a4, ...} and
> returns a list {a2/a1, a3/a2, a4/a3, ...}. I know it should be an easy
> task but I4m a newbe...

How about

  divL[list_] := Last[#]/First[#]& /@ Partition[list, 2, 1]

where list is {a1, a2, a3, a4, ...}
Harald Berndt,                                University of California
Research Specialist                         Forest Products Laboratory

Phone:	510-215-4224                                FAX:			510-215-4299


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