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Foil 25 Solving the N-body equations of motion

From CPS615-Discussion of Ordinary Differential Equations and Start of Parallel N-Body Algorithm Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 10 October 96. by Geoffrey C. Fox *
Secs 221.7
Introduce 3 vectors X V A for position,velocity and acceleration of particles
Numerical techniques iterate equations over time using
Euler's Equation gives:
X(t+dt) = X(t) + h * V(t)
V(t+dt) = V(t) + h * Grav(X(t))
Note i labels particles not time steps

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