Find the least-squares solution x* of the system:
(the following is in the form of Ax=b)
[2; -5; 2] * x = [-3; 21; 6]
[ 2 ] [ -3 ]
l -5 l x = l 21l
[ 2 ] [ 6 ]
x* = [ ???????? ]
(the following is in the form of Ax=b)
[2; -5; 2] * x = [-3; 21; 6]
[ 2 ] [ -3 ]
l -5 l x = l 21l
[ 2 ] [ 6 ]
x* = [ ???????? ]
-
-3
(2^2+5^2+2^2)^(-1) [(2)(-3)+(-5)(21)+(2)((6)] = -3.
(2^2+5^2+2^2)^(-1) [(2)(-3)+(-5)(21)+(2)((6)] = -3.