Question: MATRIX METHOD IN STATISTICS QUESTION 1 Consider the system of equations Ax = b (E1) where A is an m x n matrix, not necessary

MATRIX METHOD IN STATISTICS

QUESTION 1

Consider the system of equations Ax = b (E1)

where A is an m x n matrix, not necessary of full rank, of known numbers and b is an m x 1 vector of known numbers.

(a) State the sufficient and necessary condition for the system of equations (E1) to be consistent, then prove that the general solution of (E1) is the vector x₀ given by

MATRIX METHOD IN STATISTICS QUESTION 1 Consider the system of equations Ax

= b (E1)where A is an m x n matrix, not necessary

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