Converted by
Mathematica
June 17, 2001
![[Graphics:../Images/Pratica7_gr_139.gif]](../Images/Pratica7_gr_139.gif)
![[Graphics:../Images/Pratica7_gr_140.gif]](../Images/Pratica7_gr_140.gif)
![[Graphics:../Images/Pratica7_gr_145.gif]](../Images/Pratica7_gr_145.gif)
![[Graphics:../Images/Pratica7_gr_148.gif]](../Images/Pratica7_gr_148.gif)
![[Graphics:../Images/Pratica7_gr_151.gif]](../Images/Pratica7_gr_151.gif)
![[Graphics:../Images/Pratica7_gr_154.gif]](../Images/Pratica7_gr_154.gif)
![[Graphics:../Images/Pratica7_gr_155.gif]](../Images/Pratica7_gr_155.gif)
![[Graphics:../Images/Pratica7_gr_160.gif]](../Images/Pratica7_gr_160.gif)
![[Graphics:../Images/Pratica7_gr_167.gif]](../Images/Pratica7_gr_167.gif)
![[Graphics:../Images/Pratica7_gr_170.gif]](../Images/Pratica7_gr_170.gif)