MATLAB: How to create an array of the form [1,2,4,7,11,16] without the use of a loop

array

Is is possible to create a Matlab array where the jump between two consecutive numbers is not constant but increases by 1 every time?

It is, using the cumsum function (and a bit of fudging to get the result you want):

x = 1:5;
xs = [1 1+cumsum(x)] 
xs =
       1     2     4     7    11    16

n=10
y0=0; % Initial conditions  
y(1)=y0+x(1); 
for k=2:n
    y(k)=y(k-1)+x(k)
end

Substitute this portion of your code:

LSM = zeros(2, 2, Num_elements);
for x=1: Num_elements
LSM(1,1)= K;
LSM(1,2)= -K;
LSM(2,1)= -K;
LSM(2,2)= K;
end

With this one:

LSM(1,1)=  K;
LSM(1,2)= -K;
LSM(2,1)= -K;
LSM(2,2)=  K;