Table 2: Comparisons of the methods in evaluating the objective function .

Proposed method Method of [6] Method of [13] Method of [10]

6 0.0970 0.1196 0.1371
8 0.0960 0.1058 0.1289
10 0.0968 0.0964 0.1152
11 0.0960 0.1009 0.1094
100 0.0985