Table 3: Maximum bounds with different and a = 0.7 (Example 4.2).

Methods 2 4 6 8 10 15 20 100 1000 Zhang et al. [15] 20 22 24 26 28 33 38 118 1018 Wu et al. [16] 24 26 28 30 32 37 42 122 1022 Theorem 3.1 29 31 32 34 36 41 46 126 1026 Theorem 3.4 29 31 32 34 36 41 46 126 1026