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

Table 6

The maximum absolute errors and root mean square errors for Example 4.

𝑛	𝜎
	1	0.9991	1	0.9991
8	0.380𝑒−07	0.302𝑒−07	0.291𝑒−07	0.230𝑒−07
16	0.301𝑒−08	0.186𝑒−08	0.222𝑒−08	0.134𝑒−08
32	0.210𝑒−09	0.587𝑒−10	0.153𝑒−09	0.373𝑒−10
64	0.127𝑒−10	0.913𝑒−11	0.912𝑒−11	0.654𝑒−11