An optimal fourth-order family of methods for multiple roots and its dynamics

作者：Behl Ramandeep; Cordero Alicia; Motsa Sandile S; Torregrosa Juan R^*; Kanwar Vinay

来源：Numerical Algorithms, 2016, 71(4): 775-796.

DOI：10.1007/s11075-015-0023-5

• Nonlinear equations
• Multiple roots
• Chebyshev's method
• Schroder method
• Basin of attraction
• Complex dynamics

There are few optimal fourth-order methods for solving nonlinear equations when the multiplicity m of the required root is known in advance. Therefore, the principle focus of this paper is on developing a new fourth-order optimal family of iterative methods. From the computational point of view, the conjugacy maps and the strange fixed points of some iterative methods are discussed, their basins of attractions are also given to show their dynamical behavior around the multiple roots. Further, using Mathematica with its high precision compatibility, a variety of concrete numerical experiments and relevant results are extensively treated to confirm the theoretical development.

• 出版日期2016-4