Re: Function
- To: mathgroup at smc.vnet.net
- Subject: [mg3888] Re: [mg3819] Function
- From: Dennis M Schneider <dschneid at knox.edu>
- Date: Sat, 4 May 1996 23:22:16 -0400
- Sender: owner-wri-mathgroup at wolfram.com
On Sat, 27 Apr 1996, Roberto Diego wrote:
> Could you please give me some advice?
>
> I4m trying to find a function that works on a list like {a1, a2, a3,
> a4, ..., an} and returns a list like {a2/a1, a3/a2, a4/a3, ... an/an-1}.
>
> It should be easy but I can4t find the answer.
>
> Thanks a lot.
>
>
Since Divide is listable, just form the two appropriate lists and apply
Divide.
ratios[list_List] := Divide[Drop[list,1],Drop[list,-1]]
Dennis M. Schneider
Department of Mathematics
Knox College
Galesburg, IL 61401
(309) 341 7420
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