Question: (a) Set up and solve the normal equations for the system of equations in Example 7.40. (b) Find a parametric expression for the length of

(a) Set up and solve the normal equations for the system of equations in Example 7.40.
(b) Find a parametric expression for the length of a solution vector in part (a).
(c) Find the solution vector of minimal length and verify that it is the one produced by the method of Example 7.40.

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