rkn86 1.0

Date Added: September 09, 2013 | Visits: 248

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rkn86 Integrates a special system of second order ordinary differential equations of the formd^2 y/dx^2 = f(x,y), y(x0)=y0, y'(x0)=y'0using an effectivelly 8-stages Runge-Kutta-Nystrom pair of orders 8 and 6.The method advances using the higher order formula (using local extrapolation).The results are expected to be better than ODE86 for all tolerances.based on the code ODE86The coefficients of the Runge-Kutta-Nystrom pair NEW8(6) are taken fromS. N. Papakostas and Ch. Tsitouras, "High phase-lag order Runge-Kutta and Nystrom pairs",SIAM J. Sci. Comput. 21(1999) 747-763.The error control is based onCh. Tsitouras and S. N. Papakostas, "Cheap Error Estimation for Runge-Kutta methods", SIAM J. Sci. Comput. 20(1999) 2067-2088.tested for Matlab version 6.5URL address: http://users.ntua.gr/tsitoura/

Requirements: No special requirements

Platforms: Matlab

Keyword: Coefficients, Comput, New86, Nystrom, Pairsquot, Phaselag, Quothigh, Rungekutta

Users rating: 0/10

License: Shareware

Size: 10 KB

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