Bifurcations of Tumor-Immune Competition Systems with Delay

Figure 2

(a) The equilibrium (1.3344, 92.1911) is stable when 𝜏=0.2. (b) The oscillation solutions 𝑥(𝑡) and 𝑦(𝑡) in terms of time 𝑡 when 𝜏=0.2<𝜏₀. (c) The oscillation solution 𝑥(𝑡) in terms of 𝑡 when 𝜏=0.372892. (d) The oscillation solution 𝑦(𝑡) in terms of 𝑡.

(a)

(b)

(c)

(d)