Please solve on matlab

I can't add a file so I added a photo

clear all % clears all active variables close all clc load('ecg_Noisy');

L = length(x); T = 1/fs; %sampling interval t=[0:L-1]*T;

figure plot(t, x) axis tight; xlabel('Time in seconds'); ylabel('ECG Amplitude');

X= abs(fftshift(fft(x))); %fourier transfrom of the ECG signal

fo=fs/L;

f= [-L/2:L/2-1]*fo;

figure plot(f, X) axis tight; xlabel('frequency in Hz'); ylabel('ECG Spectrum');

Is this enough? How can I insert a file

ION EDIT E BY ONE Documents MATLAB Variables - X fs X 9519x1 double 1 2 3 4 5 1 -0.4265 2 -0.9564 3 -1.1153 4 -0.5733 -0.9139 5 5 6. -0.8883 7 -0.5448 8 -0.3988 -1.3054 9 10 -1.2250 11 - 1.0113 12 -0.8289 -0.6085 13 14 -0.8161 15 -1.1262