I have two vectors
x2 and would like to loop over the elements in
vcat(x1,x2). In particular, I want to sum over the two adjacent elements.
How can I do that without explicitly creating
x = vcat(x1,x2) and looping over the elements in
In particular, is there a simple solution for the case when there is also a
x3 and more, and when I want to sum over