Methods | μ = 0.8 | μ = 0.9 | μ ≥ 1 |
---|
[9] | 2.5967 | 2.0443 | 1.9621 |
[16] (m = 2) | 3.8359 | 2.9234 | 2.7532 |
[13] (m = 2) | 4.0414 | 3.0250 | 2.8573 |
[11] | 4.8688 | 3.8047 | 3.6001 |
[12], Theorem 1 | 5.8868 | 4.1791 | 3.9230 |
[12], Theorem 2 | 6.1527 | 4.3379 | 4.0518 |
Corollary 3.3 | 7.2376 | 5.7526 | 5.2247 |