How to draw graph of the following function?

I couldn't manage to draw the graph of the function at the picture? Please help

[zekeriya özkan]

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Answer 1

[Torsten]

function main
a = 1;
nu = 2;
d0 = 0;
nu0 = 1;
n = 15;
deltat = 0.05;
% end of user inputs
T = 0:deltat:n ;
M = [(1-a/nu^2)*cos(nu)  sin(nu)/nu ; -nu*(1-a/nu^2)*sin(nu) cos(nu)];
vec = zeros(2,n+1);
vec(:,1) = [d0;nu0];
Mpot= eye(2);
for i=1:n
  Mpot = Mpot*M;
  vec(:,i+1) = Mpot*[d0;nu0];
end
for i=1:numel(T)
   na = floor(T(i));
  arg = nu*(T(i)-na);
   x(i) = [(1-a/nu^2)*cos(arg)+a/nu^2 , sin(arg)/nu]*vec(1:2,na+1);
end
plot(T,x)
end

[zekeriya özkan]

Thanks a lot Dear friend.