```matlab
% Define the time range
t = 0:0.0001:0.02; % Time values from 0 to 0.02 seconds with a step size of 0.0001
% Define the modulation signal
m_t = 40 * cos(2*pi*300*t); % Modulation signal m(t) = 40cos(2π*300Hz*t)
% Define the carrier signal
c_t = 6 * cos(2*pi*11000*t); % Carrier signal c(t) = 6cos(2π*11kHz*t)
% Plot the modulation signal
figure;
plot(t, m_t);
xlabel('Time (s)');
ylabel('Amplitude');
title('Modulation Signal m(t)');
grid on;
% Plot the carrier signal
figure;
plot(t, c_t);
xlabel('Time (s)');
ylabel('Amplitude');
title('Carrier Signal c(t)');
grid on;
```
