How vectorize this operation

Can someone help me please?

x = 10*ones((10^7),1); 
L = ((length(x)*2):-2:2)';
M = x.*L;

p= -M./L;
c= 0.25;
x = x+c*p;

Is possible vectorize x = x+c*p;

[Stephen23]

What does "Is possible vectorize x = x+c*p" mean? That line of code already operates on vectors (of appropriate sizes) and does not throw an error. What are you trying to achieve?

[Iori Yagami Kusanagi]

When I change the value of c, implementing linear search, takes a lot of time this procedure.

[Bruno Luong]

Are you awared that you creates arrays of few hundred of Tb?

[Iori Yagami Kusanagi]

Yes, is a optimization problem that I need to solve, and when run on that part take a lot of time

[Bruno Luong]

You know how much memory has your PC? Usually few or few dozen Gb. How you intend to carry out the storage of such matrix on the computer?

Answer 1

[Jan]

The code works vectorized already. So the problem is not vectorizing.

The code can be simplified slightly:

M = x .* L;
p = -x;  % instead of: -M ./ L, but p is not needed at all
c = 0.25;
x = (1-c) * x;   % instead of: x + c * p;

The code is not meaningful yet. Maybe there is another way to improve it. But again, vectorization is applied here already.