节点 $\left(x_i,y_j\right)$

精确解

数值解

|精确解-数值解|

(1/5,1/5)

0.3894183

0.3894224

4.1e−06

(2/5,2/5)

0.7173560

0.7173642

8.2e−06

(3/5,3/5)

0.9320390

0.9320472

8.2e−06

(4/5,4/5)

0.9995736

0.9995775

3.9e−06