Suppose = 3.0 and 2 = 1.0. Start from H = 60 and A = 20.

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Suppose α = 3.0 and α2 = 1.0. Start from H = 60 and A = 20. Take two steps, with a step length of Δt = 0.25, as in Section 5.5, Exercise 13. Does this diagram help explain what went wrong?
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