53c04070-b332-4df9-8416-28e596c3126020210831082714843naun:naunmdt@crossref.orgMDT DepositInternational Journal of Circuits, Systems and Signal Processing1998-446410.46300/9106http://www.naun.org/cms.action?id=3029118202111820211510.46300/9106.2021.15https://naun.org/cms.action?id=23283A Pretreatment Method of Volterra the External Boundary Value Problem of Integral Differential EquationsXiaojuanChenSchool of Road, Bridge and Architecture, Chongqing Vocational College of Transportation, Chongqing, 402247, ChinaXiaoxiaoMaSchool of Transportation, Chongqing Vocational College of Transportation, Chongqing, 402247, ChinaIn the process of traditional methods, the error rate of external boundary value problem is always at a high level, which seriously affects the subsequent calculation and cannot meet the requirements of current Volterra products. To solve this problem, Volterra's preprocessing method for the external boundary value problem of Integro differential equations is studied in this paper. The Sinc function is used to deal with the external value problem of Volterra Integro differential equation, which reduces the error of the external value problem and reduces the error of the external value problem. In order to prove the existence of the solution of the differential equation, when the existence of the solution can be proved, the differential equation is transformed into a Volterra integral equation, the Taylor expansion equation is used, the symplectic function is used to deal with the external value problem of homogeneous boundary conditions, and the uniform effective numerical solution of the external value problem of the equation is obtained by homogeneous transformation according to the non-homogeneous boundary conditions.8312021831202112521259136https://www.naun.org/main/NAUN/circuitssystemssignal/2021/c762005-136(2021).pdf10.46300/9106.2021.15.136https://www.naun.org/main/NAUN/circuitssystemssignal/2021/c762005-136(2021).pdf10.1134/s1064562418010118N. V. Denisova, “Instability degree and singular subspaces of integral isotropic cones of linear systems of differential equations,” Doklady Mathematics, vol. 97, no. 1, pp. 35-37, 2018. 10.1007/jhep08(2019)027R. N. Lee and A. A. 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