Figure 19

Take \(\alpha _{1} =10.07, \alpha _{2}= =12.22, \alpha _{3}= 14.52, \alpha _{4}= 20.5, \sigma = 0.07\) for 3D and contour plots of Eq. (43).

Take \(\alpha _{1} =10.07, \alpha _{2}= =12.22, \alpha _{3}= 14.52, \alpha _{4}= 20.5, \sigma = 0.07\) for 3D and contour plots of Eq. (43).