Research Article

An Efficient and Straightforward Numerical Technique Coupled to Classical Newton’s Method for Enhancing the Accuracy of Approximate Solutions Associated with Scalar Nonlinear Equations

Table 6

Approximate solution of scalar nonlinear equation (when guest point = −1) obtained by Classical Newton’s Method (CNM) (cf. Section 2.2), Classical Newton’s Method coupled with New Numerical Technique (CNM + NNT) for conditions [A1] and [A2] (cf. Section 2.3), and Third-order Modified Newton’s Method (TMNM) (cf. Section 3.1). Notations: () (resp., ()) denotes that approximate solution is provided using (21a) (resp., (21b)) in Section 2.3.1.

Iteration ()CNMCNM + NNT with condition [A1]CNM + NNT with condition [A2]TMNM

0−1.0000000000−1.0000000000−1.0000000000−1.0000000000
16.14093037236.1409303723 ()6.1409303723 ()14.5343055115
25.11482084844.0887116616 ()4.0887116616 ()13.0337347682
34.23797030132.6194618995 ()2.6194618995 ()11.5318478151
43.48927668891.8291595323 ()1.0397597354 ()10.0370297219
52.76768012251.4064394475 ()1.3966765848 ()8.5556896133
61.97768974811.3601688047 ()1.3599586541 ()7.0203746257
71.44170091281.3595987088 ()1.3595986561 ()5.3974911835
81.36130369941.3595986211 ()1.3595986211 ()4.1321703085
91.35959940463.1258556869
101.35959862111.9485648236