Figure 5

The analytical (36) and approximate \(\alpha (t)\) with \(p=0.1\%\) for: (a) \(\beta =0\) and (b) \(\beta =10^{-9}\) and 10−8 for Test 1
The analytical (36) and approximate \(\alpha (t)\) with \(p=0.1\%\) for: (a) \(\beta =0\) and (b) \(\beta =10^{-9}\) and 10−8 for Test 1