QUESTION 2 [22 Marks] Consider a linear model with l l t] t] 3] 1 l o o 33 a _ 1 l it til _ 44 _ a. x'tloo 3"'3s'a2 1 o l o 33 a3 1 It 1 2-5 2.1 Write the normal equations. {a} 2.2 Find two generalized irwerses G] and G: of 32x. {6] 2.3 Use your result In part (2.2} considering B = exit in general. to nd two estimates 3 of .6 . {5) 2.4 Find two linear combinations of the elements 3 that are the same for both estimates and two that are different. {5]