Numerical Analysis for a Fractional Differential Time-Delay Model of HIV Infection of CD4⁺ T-Cell Proliferation under Antiretroviral Therapy

Figure 3

In (a)–(d), 𝛼=0.9, 𝜏=2, 𝐶=1, and 𝑟=0.01.

(a)

(b)

(c)

(d)