Question: Exercise 3.3 Redo the tests in Exercise 2.3 using the procedures of Section 3.2. Write down the models and explain the procedure. Hints: (a) Let

Exercise 3.3 Redo the tests in Exercise 2.3 using the procedures of Section 3.2.

Write down the models and explain the procedure.

Hints:

(a) Let A be a matrix of zeros, the generalized inverse of A, A−, can be anything at all because AA−A = A for any choice of A−.

(b) There is no reason why X0 cannot be a matrix of zeros.

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