create with octave thank you with screenshots, really just need conclusions

Description: Use the trigonometric form of the Fourier series to represent the signal shown below as a constant plus a series of sinusoids. volts 3 2 LL. -10 -5 0 5 10 seconds x(t) is periodic and has finite energy per period, so it can be represented using the Fourier series. Employing the trigonometric form, X(t) = 2, + {a,cos[0.4nu]+bysin[0.4nsur}} Harmonic (1) 0 (de term) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 an 0.6 0.490 -0.058 0.039 -0.122 0 0.082 -0.017 0.014 -0.054 0 0.045 -0.010 0.009 -0.035 0 0.796 0.398 0.265 0.199 0 0.133 0.114 0.099 0.088 0 0.072 0.066 0.061 0.057 0 Octave Program: write an Octave script file to show the convergence of the Fourier series by calculate five, ten, fifteen and twenty-five harmonics and plot the corresponding approximation of x(t) as the following figures. Ten harmonics Fire harmonies -2-13-1 Fifteen harmonics Submit requirements: 1. Objective of the lab, 2. Three figures 3. Conclusions