Geodesic
On the admissible areas of the pole positions in the pole method of secants
Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, Tome 25 (2002) no. 2, pp. 91-92.

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The method of secants improvement is considered. The introduction of pole coordinate parameters allows polar secant method to be obtained. The analysis of the rules of parameter fixing, selection of obtarting approximations has been performed. The estimation of velocity of convergence has been obtained. 
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     author = {N. A. Rychina},
     title = {On the admissible areas of the pole positions in the pole method of secants},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
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     number = {2},
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     url = {http://geodesic.mathdoc.fr/item/IIMI_2002_25_2_a24/}
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N. A. Rychina. On the admissible areas of the pole positions in the pole method of secants. Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, Tome 25 (2002) no. 2, pp. 91-92. http://geodesic.mathdoc.fr/item/IIMI_2002_25_2_a24/