how to find frequency content in matlab

main.m
% Define a signal
t = 0:0.001:1; % time axis
f = 10; % signal frequency in Hz
x = sin(2*pi*f*t); % signal with amplitude 1

% Plot the signal in time domain
figure;
plot(t, x);
xlabel('Time (s)');
ylabel('Amplitude');
title('Signal in time domain');

% Perform DFT on the signal
X = fft(x);
X_mag = abs(X); % Magnitude of the DFT coefficients
freq = (0:length(X)-1)*(1/length(X))*(1/(t(2)-t(1))); % Frequency axis

% Plot the frequency content of the signal
figure;
plot(freq, X_mag);
xlabel('Frequency (Hz)');
ylabel('Magnitude');
title('Signal in frequency domain');
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