Iterations in an equation

Hi, how do I use my iterations with delta z for example. z = [0:0.1:100] and I need to have the z prior to the one I would use.

[Mili Goyal]

Could you give more clarity as to what is required maybe via an example?

[Christian Joshua Lee]

[Christian Joshua Lee]

It is like this, I need to use the iterations in z for my equation in r.

Answer 1

[KSSV]

z = [0:0.1:100] ;
nz = length(z) ;
for i = 2:n
    dz = z(n-1)-z(n)
end

The above can also be achieved using:

dz = diff(z) ;