MATLAB: Can you help me to plot the derivative of the function.

Question

I have a code matlab:

k = 3;

N = 2500;

L = 250;

B = L/N ;

dn = 1/L;

n0 = 0.1;

n = dn : dn : N*dn;

phi = 2*pi*rand(size(n));

Amp1 = sqrt(dn)*(2^k)*(1e-3)*(n0./n);

x = 0:B:L-B;

hx = zeros(size(x));

for i=1:length(x)

hx(i) = sum(Amp1.*cos(2*pi*n*x(i)+ phi));

end

Can you help me to plot the derivative of the function hx(i).

Thank you so much. Have a good day.

Answer 1

plot(diff(hx));

https://in.mathworks.com/help/matlab/ref/diff.html