Net web server - 580 ANSWERS TO EXERCISES 4.3.1 4. We may
580 ANSWERS TO EXERCISES 4.3.1 4. We may make the following assertion before Al: n 2 1; and 0 2 ui, 21, < b for 1 5 i 5 n. Before A2, we assert: 1 2 j 2 n; 0 2 uz, vz < b for 1 2 i 5 n; 0 5 W, < b for j < i 5 n; 0 5 k 5 1; and (u?+~. . . u,)* + (Vj+l . %)b = (kwJ+l wn)b. The latter statement means more precisely that c utbn- + c vtbn- = kb -3 + c wtbn-t. j