Say you do two experiments where you apply one numerical method to approximate the solution of an initial value problem from t = 6 tot = 15, first using the stepsize At = h and then using the stepsize At = h/11 (so, taking 11 times more steps). If E¡ and E, are the errors in the respective approximations for y(15), what approximate number would you expect the ratio of the errors # to be if you were using the following numerical methods? (Alternatively: For the error in the second approximation, by approximately what factor would you expect the (global) truncation error of our first approximation to be cut?) Euler's method: Improved Euler's method: (Classical) 4th-order Runge-Kutta
Say you do two experiments where you apply one numerical method to approximate the solution of an initial value problem from t = 6 tot = 15, first using the stepsize At = h and then using the stepsize At = h/11 (so, taking 11 times more steps). If E¡ and E, are the errors in the respective approximations for y(15), what approximate number would you expect the ratio of the errors # to be if you were using the following numerical methods? (Alternatively: For the error in the second approximation, by approximately what factor would you expect the (global) truncation error of our first approximation to be cut?) Euler's method: Improved Euler's method: (Classical) 4th-order Runge-Kutta
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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