Numerical Algorithms

, Volume 71, Issue 4, pp 775–796 | Cite as

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

  • Ramandeep Behl
  • Alicia Cordero
  • Sandile S. Motsa
  • Juan R. TorregrosaEmail author
  • Vinay Kanwar
Original Paper


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.


Nonlinear equations Multiple roots Chebyshev’s method Schröder method Basin of attraction Complex dynamics 


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Ramandeep Behl
    • 1
  • Alicia Cordero
    • 2
  • Sandile S. Motsa
    • 1
  • Juan R. Torregrosa
    • 2
    Email author
  • Vinay Kanwar
    • 3
  1. 1.School of Mathematics, Statistics and Computer ScienceUniversity of KwaZulu-NatalPietermaritzburgSouth Africa
  2. 2.Instituto de Matemática MultidisciplinarUniversitat Politècnica de ValènciaValenciaSpain
  3. 3.University Institute of Engineering and TechnologyPanjab UniversityChandigarhIndia

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