Table 7 Numerical results for Example 4.6 with $\mathit{K}\mathbf{=}{\mathbf{[}\mathbf{-}\mathbf{1}\mathbf{,}\mathbf{1}\mathbf{]}}^{\mathbf{4}}$

${(0.5,0.5,0.5,0.5)}^T$

53

8.45e−007

0.0213

30

5.76e−007

0.0059

${(-2,-2,-2,-2)}^T$

66

8.30e−007

0.0247

40

4.25e−007

0.0070

${(10,10,10,10)}^T$

54

8.73e−007

0.0200

39

2.93e−007

0.0080

${(-6,-6,6,6)}^T$

62

8.00e−007

0.0249

41

6.95e−007

0.0084

${(8,3,-3,-8)}^T$

57

8.31e−007

0.0223

35

9.39e−007

0.0060

${(10,-10,-10,10)}^T$

60

8.22e−007

0.0211

38

4.04e−007

0.0064