$M=N$

$E^N\left(h\right)$

$rat{e}_h$

10

$3.58633\times {10}^{-3}$

*

20

$8.15134\times {10}^{-4}$

2.1374

40

$2.04723\times {10}^{-4}$

1.9934

80

$5.24128\times {10}^{-5}$

1.9657

160

$1.32845\times {10}^{-5}$

1.9802