Geometric Mesh Three-Point Discretization for Fourth-Order Nonlinear Singular Differential Equations in Polar System

Table 3

The maximum absolute errors and root mean square errors for Example 2.

𝑛	𝜎
	1	0.998	1	0.998
8	0.302𝑒−05	0.255𝑒−05	0.235𝑒−05	0.199𝑒−05
16	0.238𝑒−06	0.169𝑒−06	0.179𝑒−06	0.128𝑒−06
32	0.167𝑒−07	0.751𝑒−08	0.124𝑒−07	0.557𝑒−08
64	0.111𝑒−08	0.919𝑒−10	0.819𝑒−09	0.649𝑒−10