Nonoscillation of Second-Order Dynamic Equations with Several Delays

Figure 1

The graph of 10 iterates for the solutions of (4.20) and (4.22) illustrates the result of Theorem 4.4, here 𝑦(𝑡)>𝑥(𝑡) for all 𝑡∈(1,∞)_2ℤ.