dott wrote:
Hi,
Suppose I have a vector in real number
(x1, x2, x3, x4, x5, x6)
My question is how I can get
x5*x3*x1 + x6*x4*x2 ?
Thanks a lot.
Dot.
hard to say what you mean?
Maybe summing up all elements in odd positions and the ones in even
positions?
myvector <- 1:6
1*3*5 + 2*4*6
sum(prod(myvector[((1:length(myvector))%%2)==1]),prod(myvector[((1:length(myvector))%%2)==0]))
Best,
Roland
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