Question

matlab code needed urgent

Answer 1

(a)

% create a vector for time

t = [ -pi : 0.01 : pi ];

% create a vector of same length as t to store f(t)

f = [ 1 : length(t) ];

for i = 1 : length(t)

   

    % if -pi <= t < 0

    if t(i) < 0 && t(i) >= -pi

       

        f(i) = exp(t(i));

       

  % if 0 <= t < pi

    else

       

       f(i) = exp(-t(i));

       

    end

   

end

% set the label of axis

ylabel('f(t)');

xlabel('t');

grid on

hold

% plot the graph

plot( t , f );

Sample Output

(b)

% create a vector for time

t = [ 0 : 0.01 : 2 * pi ];

% create a vector of same length as t to store f(t)

f = [ 1 : length(t) ];

for i = 1 : length(t)

   

    % if 0 <= t < pi/2

    if t(i) < pi && t(i) >= 0

       

        f(i) = -1;

      

    % if pi / 2 <= t < 3 * pi / 2

    elseif t(i) < 3 * pi / 2 && t(i) >= pi / 2

       

        f(i) = 1;

       

    % if 3 * pi / 2 <= t < 2 * pi

    else

       

       f(i) = -1;

       

    end

   

end

% set the label of axis

ylabel('f(t)');

xlabel('t');

grid on

hold

% plot the graph

plot( t , f , 'r');

Sample Output