Research Article

A General Three-Step Class of Optimal Iterations for Nonlinear Equations

Table 4

Comparison of different methods for finding the simple roots of test functions.

Test functionsMethodsNM(1.1)(1.2)(1.3)(2.14)(2.15)

𝑓 1 IN843333
TNE163212121212
| 𝑓 ( 𝑥 ) | 0 . 2 𝑒 2 7 3 0 . 4 𝑒 2 7 1 0 . 5 𝑒 4 1 5 0 . 7 𝑒 3 6 9 0 . 2 𝑒 4 4 8 0 . 1 𝑒 4 2 9

𝑓 2 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 1 𝑒 4 8 5 0 . 8 𝑒 2 3 8 0 . 6 𝑒 3 7 2 0 . 6 𝑒 3 0 1 0 . 4 𝑒 4 0 9 0 . 1 𝑒 3 7 8

𝑓 3 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 2 𝑒 5 9 5 0 . 6 𝑒 2 9 7 0 . 3 𝑒 6 0 8 0 . 6 𝑒 5 1 1 0 . 2 𝑒 6 1 0 0 . 2 𝑒 6 0 3

𝑓 4 IN843333
TNI163212121212
| 𝑓 ( 𝑥 ) | 0 . 5 𝑒 3 9 3 0 . 2 𝑒 3 9 3 0 . 3 𝑒 6 8 3 0 . 2 𝑒 6 4 5 0 . 3 𝑒 7 2 9 0 . 2 𝑒 7 1 7

𝑓 5 IN853333
TNE164012121212
| 𝑓 ( 𝑥 ) | 0 . 1 𝑒 7 9 8 0 . 1 𝑒 4 3 1 0 . 3 𝑒 6 0 0 0 . 3 𝑒 5 1 1 0 . 8 𝑒 6 4 1 0 . 3 𝑒 6 4 1

𝑓 6 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 2 𝑒 6 6 0 0 . 2 𝑒 3 2 9 0 . 2 𝑒 6 8 5 0 . 5 𝑒 5 6 7 0 . 1 𝑒 7 0 8 0 . 7 𝑒 7 2 9

𝑓 7 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 1 𝑒 5 3 8 0 . 8 𝑒 2 6 9 0 . 1 𝑒 5 6 2 0 . 3 𝑒 4 4 4 0 . 1 𝑒 5 8 0 0 . 1 𝑒 5 7 2

𝑓 8 IN843333
TNE163212121212
| 𝑓 ( 𝑥 ) | 0 . 2 𝑒 2 0 4 0 . 3 𝑒 1 4 8 0 . 3 𝑒 2 3 9 0 . 7 𝑒 1 5 8 0 . 6 𝑒 2 0 5 0 . 5 𝑒 1 9 8

𝑓 9 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 1 𝑒 3 3 2 0 . 1 𝑒 1 6 4 0 . 1 𝑒 2 7 3 0 . 5 𝑒 2 5 4 0 . 7 𝑒 3 3 6 0 . 1 𝑒 3 1 5

𝑓 1 0 IN843333
TNE163212121212
| 𝑓 ( 𝑥 ) | 0 . 4 𝑒 3 2 9 0 . 1 𝑒 3 2 9 0 . 5 𝑒 6 8 9 0 . 2 𝑒 5 7 9 0 . 4 𝑒 6 9 6 0 . 5 𝑒 7 2 1

𝑓 1 1 IN843333
TNE163212121212
| 𝑓 ( 𝑥 ) | 0 . 1 𝑒 3 0 9 0 . 6 𝑒 2 8 5 0 . 2 𝑒 2 9 1 0 . 7 𝑒 3 1 2 0 . 3 𝑒 2 1 9 0 . 2 𝑒 2 5 5

𝑓 1 2 IN943333
TNE183212121212
| 𝑓 ( 𝑥 ) | 0 . 4 𝑒 5 7 6 0 . 4 𝑒 2 8 8 0 . 3 𝑒 6 1 9 0 . 4 𝑒 4 8 6 0 . 1 𝑒 6 9 2 0 . 5 𝑒 6 5 1