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Boundary Value Problems

Table 3 Error E u M N

From: High order of accuracy difference schemes for the inverse elliptic problem with Dirichlet condition

Difference schemes for u

N = 6, M = 108

N = 10, M = 300

Second order ADS

0.0055245

0.0016936

Third order ADS

9.83 × 10−4

2.11 × 10−4

Fourth order ADS

5.83 × 10−5

9.3 × 10−6

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