| Chebyshev节点 | 等距节点 |
7 × 7 | 2.2814 × 10−15 | 1.5813 × 10−15 |
9 × 9 | 9.2082 × 10−15 | 4.7452 × 10−15 |
11 × 11 | 1.3126 × 10−14 | 2.4736 × 10−13 |
13 × 13 | 3.6560 × 10−14 | 4.7531 × 10−12 |
15 × 15 | 6.6838 × 10−14 | 1.0601 × 10−10 |
17 × 17 | 7.0478 × 10−14 | 4.7634 × 10−9 |
19 × 19 | 9.8388 × 10−14 | 3.3461 × 10−7 |
21 × 21 | 2.1366 × 10−13 | 5.8004 × 10−7 |