New families of nonlinear third-order solvers for finding multiple roots
Computers & Mathematics with Applications
Constructing higher-order methods for obtaining the multiple roots of nonlinear equations
Journal of Computational and Applied Mathematics
Fifth-order iterative method for finding multiple roots of nonlinear equations
Numerical Algorithms
Iterative methods for solving nonlinear equations with finitely many roots in an interval
Journal of Computational and Applied Mathematics
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Several one-parameter families of fourth-order methods for finding multiple zeros of non-linear functions are developed. The methods are based on Murakami's fifth-order method (for simple roots) and they require one evaluation of the function and three evaluations of the derivative. The informational efficiency of the methods is the same as the previously developed methods of lower order. For a double root, the method is more efficient than all previously known schemes. All these methods require the knowledge of multiplicity.