Throughout positive solutions of second-order nonlinear differential equations
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In this paper, we consider the second-order nonlinear and the nonlinear neutral functional differential equations
(α(t)x'(t))' + ƒ(t, x(g(t))) = 0, t ≥ t0
(α(t)(x(t) - p(t)x(t - τ))')' + ƒ(t, x(g(t))) = 0, t ≥ t0.
Using the Banach contraction mapping principle, we obtain the existence of throughout positive solutions for the above equations.
CitationZhang, Z., Wang, C., Li, Q., & Li, F. (2005). Throughout positive solutions of second-order nonlinear differential equations. Electronic Journal of Differential Equations, 2005(53), pp. 1-12.
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