1. Calculate the most probable values for A and B in the equations belowbj.r the method of least squares. Consider the observations to be of equal weight. Solve the problem using both algebraic approach and matrices and compare your results. [10pm] A+23=lj+v1 EFL-3B =5_55+v2 sats = -l.5+ir3 2. If the observations above have weights of 2, 3 and 1 respectively: solve these equations for the most probable values of A and B using new [1 least squares method. Solve the problem using both algebraic approach and matrices and compare your results. [1011135]