Table 1: Values of the successive lower/upper approximations and , .

0 3 4 5 9 10

0.300000 0.300000 0.300000 0.300000 0.300000 0.300000
0.107373 0.102318 0.097378 0.092799 0.079779 0.077504
−0.161693 −0.140751 −0.121361 −0.104382 −0.054887 −0.045805
−0.350522 −0.313072 −0.277815 −0.246387 −0.150852 −0.132489
−0.450828 −0.404758 −0.361295 −0.322444 −0.203309 −0.180134
−0.495330 −0.445438 −0.398367 −0.356278 −0.226976 −0.201742
−0.513731 −0.462242 −0.413672 −0.370244 −0.236787 −0.210719
−0.521346 −0.469185 −0.419987 −0.376000 −0.240816 −0.214404
−0.524570 −0.472122 −0.422654 −0.378427 −0.242506 −0.215947

−0.526 −0.474 −0.424 −0.380 −0.244 −0.217

−0.529472 −0.476579 −0.426694 −0.382097 −0.245037 −0.218253
−0.532445 −0.479278 −0.429136 −0.384311 −0.246548 −0.219624
−0.538843 −0.485075 −0.434371 −0.389046 −0.249751 −0.222525
−0.551920 −0.496893 −0.445013 −0.398643 −0.256153 −0.228299
−0.576447 −0.518984 −0.464830 −0.416445 −0.267835 −0.238790
−0.617154 −0.555535 −0.497512 −0.445709 −0.286810 −0.255788
−0.677874 −0.610052 −0.546283 −0.489435 −0.315694 −0.281933
−0.783286 −0.704773 −0.631632 −0.567151 −0.376223 −0.340584
−1.000000 −1.000000 −1.000000 −1.000000 −1.000000 −1.000000