Abstract :
Consider the second order nonlinear differential equation E. y0 qa t.f y.s0
where a t.gCw0, `., f y.gC1 y`, `., f 9 y.G0, and yf y.)0 for y/0.
Furthermore, f y. also satisfies either a superlinear or a sublinear condition,
which covers the nonlinear function f y.sy< y
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications