Message-ID: <1A8C1289955EF649A09086A153E2672403D134DD45@GBTEDVPEXCMB04.corp.lgc-group.com>
Date: 2016-04-11T15:27:38Z
From: S Ellison
Subject: write a function inside the summation in a more condensed form
In-Reply-To: <64637103.134972.1460123686728.JavaMail.yahoo@mail.yahoo.com>
> I want to write the inside function (3^(x[i]+x[j])) in a more condensed form
> cause this will help me when the multiple summations are more than two
indices<-c(i,j) #or whatever you want
3^sum( x[indices] )
S Ellison
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