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

Table 1

The maximum absolute errors for Example 1.

𝑛	𝜆=1		𝜆=2
	𝜎
	1	0.9937	1	0.996759
8	0.866𝑒−04	0.772𝑒−04	0.290𝑒−05	0.271𝑒−05
16	0.223𝑒−04	0.176𝑒−04	0.190𝑒−05	0.170𝑒−05
32	0.123𝑒−04	0.730𝑒−05	0.640𝑒−08	0.246𝑒−08
64	0.615𝑒−06	0.348𝑒−08	0.365𝑒−09	0.882𝑒−10