Converted by
Mathematica
June 22, 2001
![[Graphics:../Images/Pratica8Sol_gr_35.gif]](../Images/Pratica8Sol_gr_35.gif)
![[Graphics:../Images/Pratica8Sol_gr_36.gif]](../Images/Pratica8Sol_gr_36.gif)
![[Graphics:../Images/Pratica8Sol_gr_37.gif]](../Images/Pratica8Sol_gr_37.gif)
![[Graphics:../Images/Pratica8Sol_gr_38.gif]](../Images/Pratica8Sol_gr_38.gif)