least_squares_plots()():
  MATLAB/Octave version 11.3.0
  On a single picture, plot:
  * 15 data points (X,Y).
  * the least squares line Y=A*X+B.
  * the exact formula Y=1/2*X^2 + 1.

  Plot commands stored in 'least_squares_commands.txt'.

least_squares_plots():
  Normal end of execution.