Abstract
Steffensen’s method is known for its fast speed of convergence and its difficulty in applying it in Banach spaces. From the analysis of the accessibility of this method, we see that we can improve it by using the simplified secant method for predicting the initial approximation of Steffensen’s method. So, from both methods, we construct an hybrid iterative method which guarantees the convergence of Steffensen’s method from approximations given by the simplified secant method. We also emphasize that the study presented in this work is valid for equations with differentiable operators and non-differentiable operators.
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This work was supported in part by the project MTM2011-28636-C02-01 of the Spanish Ministry of Science and Innovation.
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Ezquerro, J., Hernández-Verón, M., Rubio, M. et al. An hybrid method that improves the accessibility of Steffensen’s method. Numer Algor 66, 241–267 (2014). https://doi.org/10.1007/s11075-013-9732-9
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DOI: https://doi.org/10.1007/s11075-013-9732-9
Keywords
- Nonlinear equation
- Non-differentiable operator
- Simplified secant method
- Steffensen’s method
- Hybrid method
- Semilocal convergence
- Domain of parameters