Fig. 3. The dependence of and on R for . Unique (triple) solutions exist in the shaded (non-shaded) area.
![[FIGURE]](img69.gif)
![[FORMULA]](img63.gif)
and ![[FORMULA]](img65.gif)
on R for ![[FORMULA]](img67.gif)
. Unique (triple) solutions exist in the shaded (non-shaded) area.