With II data points given by the column vectors xdat and ydatin MATLAB, the commands >> A = [xdat.^0 xdat.^1 xdat.^2 xdat.^3]; >> u = (A'*A) (A'*ydat) produce the output u = 2.9335.886 \[ \begin{array}{l} \gg A=\left[\text { xdat. } \wedge^{-0} \text { xdat. }{ }^{-1} \text { xdat. }{ }^{\wedge} 2 \text { xdat. }{ }^{-} 3ight] \\ \gg u=\left(A^{\prime} * Aight) \backslash\left(A 1 answer