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Differential EquationsChallengeExistence, Uniqueness & Bifurcations

Existence, Uniqueness & Bifurcations · Challenge problem

Just past a saddle-node, y′=r+y2y' = r + y^2 with r=19r = \dfrac19 has no equilibria, and every solution comes up from −∞-\infty and escapes to +∞+\infty in finite time. How long does each solution exist (the length of its maximal interval)?