Asymptotic behavior of solutions of delay logistic differential equation with negative instantaneously terms

摘要

In this paper, we investigate asymptotic behavior of solutions of delay logistic equation with negative instantaneously termsx′(t)+r(t)[1+x(t)][cx(t)+x(t−τ)]=0(t⩾0)and the corresponding initial conditionx(t)=ϕ(t),ϕ∈C([−τ,0],[0,∞)),ϕ(0)>0,where r∈C([0,∞),(0,∞)),c,τ∈(0,∞). Some new results are established, some known results are improved.