Let A=⎣⎡313131210−21⎦⎤,b=⎣⎡11−1⎦⎤ and W=col(A) PART A) Compute projWb. (Don't compute the projection m
Posted: Thu Jul 14, 2022 3:56 pm
Let A=⎣⎡313131210−21⎦⎤,b=⎣⎡11−1⎦⎤ and W=col(A) PART A) Compute projWb. (Don't compute the projection matrix; use the fact the columns of A are orthonormal) PART B) Recall that the least squares solution is the vector x^ such that projWb=Ax^ Solve for x^ using the above equation and your answer from part a. (Hint: What does ATA simplify to?)