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Some properties of solutions of \((r(t)\Psi(x)x')'+a(t)f(x)=0\). (English) Zbl 0397.34004


MSC:

34A12 Initial value problems, existence, uniqueness, continuous dependence and continuation of solutions to ordinary differential equations
34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations
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