Computer Geometries for Finding All Real Zeros of Polynomial Equations Simultaneously  

作　　者：Naila Rafiq Saima Akram Mudassir Shams Nazir Ahmad Mir 

机构地区：[1]Department of Mathematics,NUML,Islamabad,44000,Pakistan [2]Centre for Advanced Studies in Pure&Applied Mathematics,Bahauddin Zakariya University,Multan [3]Department of Mathematics and Statistics,Riphah International University I-14,Islamabad,44000,Pakistan

出　　处：《Computers, Materials & Continua》2021年第11期2635-2651,共17页计算机、材料和连续体（英文）

摘　　要：In this research article,we construct a family of derivative free simultaneous numerical schemes to approximate all real zero of non-linear polynomial equation.We make a comparative analysis of the newly constructed numerical schemes with a well-known existing simultaneous method for determining all the distinct real zeros of polynomial equations using computer algebra system Mat Lab.Lower bound of convergence of simultaneous schemes is calculated using Mathematica.Global convergence property of the numerical schemes is presented by taking random starting initial approximation and their convergence history are graphically presented.Some real life engineering applications along with some higher degree polynomials are considered as numerical test problems to show performance and efficiency of the derivative free family of numerical methods with comparison of an existing method of same order in literature.Local computational order of convergence,CPU time,graph of computational order of convergence and residual error graphs elaborate efficiency,robustness and authentication of the suggested family of numerical methods in its domain.

关 键 词：POLYNOMIALS simultaneous iterative methods random initial guesses lower bound local computational order CAS-mathematica and mat lab 

分 类 号：O17[理学—数学]