whats wrong with my code.. its from a book but cant run
tspan=[0 4];y0=[0.02;0];[t,y]=ode45('unforced1',tspan,y0);plot(t,y(:,1));grid onxlabel(‘time’)ylabel(‘Displacement’)title(‘Displacement Vs Time’)hold on;its function is function yp = unforced1(t,y)yp = [y(2);(-((c/m)*y(2))-((k/m)*y(1)))];
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