Can you please help me with this
Let A = 1 -2 and b = ( 3 1 -4 2 )t
-1 2
0 3
2 5
(a) Find a least-squares solution of Ax = b.
(b) Find the orthogonal projection of b onto the column space of A.
(c) Compute the least-squares error ( in the solution of part ( a )).
Thank you!