How to define a continuous range?

Here I defined a range for dy from 0.5 to 5 using

dy = 0.5:0.1:5

The script works slowly and need to wait for a long time for it to produce a graph

If I used another way like below trying to define a continuous range:

dy >=0.5 & dy <=5

or

dy >=0.5 && dy <=5

Matlab produces errors saying

Invalid use of operator.

My full script is below:

syms x1 y1 x2 y2
i=1;
for dy=0.5:0.1:5
    M(i,1) = dy;
    f = [5.*x1-6.*y1+1+0.5.*(x2-x1), 6.*x1-7.*y1+1+dy.*(y2-y1), 5.*x2-6.*y2+1+0.5.*(x1-x2), 6.*x2-7.*y2+1+dy.*(y1-y2)];
    v = [x1,y1,x2,y2];
    R0 = jacobian(f,v);
    d0 = eig(R0);
    dmax = [max(d0)]
    M(i,2) = dmax;
    i = i+1;
end

plot(M(:,1),M(:,2))

What should I do if I want to define a continuous range and improve the working speed of the script?

Thanks in advance.

Answer 1

[Chidvi Modala]

If you can provide the time it is taking to plot the graph by using tic and toc, it will be helpful. Because it is taking just 3s for me to run the entire script.