Fourier Series for a Periodic Function

Why is the graph not complete?

%% Problem 1_Example_17.2

display('Problem 1_Example_17.1')

ao=1/4;

an=[1/[(n^2)*(pi^2)]]*((1-(-1)^n));

N = 100000;

Wo = pi;

t = -1:.001:11;

f = zeros(1,length(t));

for n = 1:2:N

bn = (-1)^n+1;

f = f + an*cos(Wo*n*t) + bn*sin(Wo*n*t);

end

% Plotting and plot formatting is done here

plot(t,f)

axis([-1 11 -1.1 1.1])

title(['Fourier Series Representation w/ ' num2str(N) ' Terms'],'FontSize',16)

xlabel('Time')

ylabel('Function Value')

Answer 1

[KALYAN ACHARJYA]

display('Problem 1_Example_17.1')
ao=1/4;
N = 100000;
Wo = pi;
t = -1:.001:11;
f = zeros(1,length(t)); 
n =linspace(1,2,length(t)); 
bn = (-1).^n+1;
an=1./((n.^2).*(pi^2)).*((1-(-1).^n)); 
f = f + an.*cos(Wo*n.*t) + bn.*sin(Wo*n.*t); 
% Plotting and plot formatting is done here
plot(t,f);
grid on;
title(['Fourier Series Representation w/ ' num2str(N) ' Terms'],'FontSize',16)
xlabel('Time');
ylabel('Function Value');
axis tight;

Is this?