Converted by
Mathematica
June 22, 2001
![[Graphics:../Images/Pratica8Sol_gr_24.gif]](../Images/Pratica8Sol_gr_24.gif)
![[Graphics:../Images/Pratica8Sol_gr_25.gif]](../Images/Pratica8Sol_gr_25.gif)
![[Graphics:../Images/Pratica8Sol_gr_26.gif]](../Images/Pratica8Sol_gr_26.gif)
![[Graphics:../Images/Pratica8Sol_gr_27.gif]](../Images/Pratica8Sol_gr_27.gif)