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1. Using linear stability analysis, identify any restrictions on the step size for a stable solution. (a) Consider a system of linear rst order differential
1. Using linear stability analysis, identify any restrictions on the step size for a stable solution. (a) Consider a system of linear rst order differential equations: du a : (u+v) (1) do a : (um (2) with u(0) : 1 and v(0) : 0 as the initial condition. Assume uniformly Spaced timestep, At for obtaining nite difference approximation to the system of differential equation. i. Write down the nitedifference approximation using the Forward Euler scheme to the above system of equation. Write your nal finite difference approximation in a matrixvector format. ii. Identify if the Forward Euler scheme is unconditionally unstable, conditionally sta ble, or unconditionally stable. If conditionally stable, obtain any timestep restric tions for which the scheme will produce stable results. Clearly show all steps and box your nal
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