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Re: "Accumulate" with operator Times.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114880] Re: "Accumulate" with operator Times.
  • From: Peter Pein <petsie at dordos.net>
  • Date: Tue, 21 Dec 2010 00:19:50 -0500 (EST)
  • References: <iemq88$m7m$1@smc.vnet.net>

Am Mon, 20 Dec 2010 05:40:24 +0000 (UTC)
schrieb Matthias Bode <lvsaba at hotmail.com>:

> Hola:
> 
> In[5]:= Accumulate[{a, b, c}]  yields
> 
> Out[5]= {a, a + b, a + b + c}
> 
> Is there a simple command, similar to Accumulate, that yields
> 
> {a, a*b, a*b*c} ?
> 
> Best regards,
> 
> MATTHIAS BODE
> S 17.35775=B0, W 066.14577=B0
> 2'740 m
> AMSL.
> 

Yes:

In[27]:= Accumultiply[{}]={1};
         Accumultiply[{f_,r___}]:=FoldList[Times,f,{r}]
In[29]:= Accumultiply[{a,b,c}]
Out[29]= {a,a b,a b c}

Peter



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