k

2

3

3.5

4

5

6

G_t

1.000000

0.9027344

0.8905792

0.8862269

0.8872639

0.8929796

G_e

1.0030660

0.9025268

0.8906764

0.8876632

0.8923529

0.8998236

Relative error (%)

0.3

0.02

0.01

0.16

0.57

0.76