QR decomposition by hand By hand, find the QR decomposition for the following matrix using Householder Transform and Modified Gram Schimdt Orthogonalization A = (1.5 2 2.0 3.5 6.0 2 3.0 3.0) Find best fit cubic curve P(x) = a_0 + a_1x + a_2x^2 + a_3x^3 for the points (x_i,P(x_i)) = [(0.5,0.0)(1.0,1.0)(1.5,20.0)(2.02.0)(2.5,3.0)(3.0.4.0)(3.5,7.0)] First explain how you w]ould go about formulating this problem. You may use the MATLAB command A\b to solve this problem. Plot the resulting curve between 0