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Modified Jarratt method for computing multiple roots. (English) Zbl 1203.65084
Construction of iterative methods of optimal order for multiple roots is a difficult problem in numerical analysis. A fourth order method for computing multiple roots of nonlinear equations (f(x)=0) is presented. The method is based on the Jarratt scheme for simple roots. The method is optimal, since it requires three evaluations per step. The efficacy is tested on the a number of relevant numerical problems.
MSC:
65H05Single nonlinear equations (numerical methods)
References:
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