$h_x$

$E_{\infty }\left(h_x,h_t\right)$

order

CPU

1/5

3.3950e−04

—

0.1571s

1/10

2.2946e−05

3.8871

0.1944s

1/20

1.4850e−06

3.9500

0.1385s

1/40

9.5466e−08

3.9590

0.1414s