a) For a fixed delta t(i+1)= delta t, the linear equation, x = Ax, x(t0)=x0 has the solution... Show that the Runge Kutta method (below) is 3rd order and not 4th order for the above linear equation.
bi) Find the exact solution of x = -2x, x0 = 3
bii) Find the numerical solution for two simulation steps using explicit Euler and delta t=0.2.
biii) Find the numerical solution for two simulation steps using modified Euler and delta t=0.2.
biv) Find the global error at t=0.4 for the above methods. What do you expect will happen to these errors if the step size is halved?
See the attached file.© BrainMass Inc. brainmass.com December 24, 2021, 5:12 pm ad1c9bdddf
This solution is provided in 718 words combined and attached in two separate .doc files. It uses step-by-step equations for solving the mathematical problems regarding the numerical integration and uses the Runge Kutta method.