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+// Least squares solution of the simple problem discussed in Example 6.4 on page 164
+// 6.1
+
+Mag = 10; V = 10; No_pts = 100; theta = 2;
+Phi = Mag * (1-2*rand(No_pts,1));
+E = V * (1-2*rand(No_pts,1));
+Z = Phi*theta + E;
+LS = Phi \ Z
+Max = max(Z ./ Phi), Min = min(Z ./ Phi)
+
+