Question: Finally, for the same XA 1 8 set of data, you will use the least squares method to compute the best degree n trigonometric polynomial

Finally, for the same XA18 set of data, you will use the least squares method to compute the best degree n trigonometric polynomial approximation to this data for n =3,5,7. Here a degree n trigonometric polynomial means a function 7 fn(x)= a; sin(ja). You should set up and solve the appropriate linear system in Matlab/Octave. For each choice, plot your approximation on top of the data provided and compute the least squares error.

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