Arrays have incompatible sizes for this operation.

t=(-1:0.001:5);

u=@(t) t>0;

h1=(2).*(heaviside(t)-heaviside(t-1));

h2=(4).*(heaviside(t)-heaviside(t-2));

h12 = conv(h1,h2);

ht= h1+h12;

% Plot out h1*h2

figure(1)

subplot(1, 1,1 );

plot(t,ht, 'b-', 'LineWidth', 2); % Just plot vs. index.

grid on;

title('Signal h(t)');

xlabel('time', 'FontSize', 12);

ylabel('amplitude h(t)', 'FontSize', 12);

Answer 1

[cr]

Try the following change in conv() call on line 5.

h12 = conv(h1,h2,'same');