Research Article
A Class of Three-Step Derivative-Free Root Solvers with Optimal Convergence Order
Table 1
Comparison of efficiency indices for different derivative-free methods.
| Methods | Steffensen | (1.1) | (1.2) | (1.3) | (1.4) | (2.6) | (2.16) |
| Efficiency indices | 1.414 | 1.587 | 1.587 | 1.587 | 1.565 | 1.682 | 1.682 |
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