Solutions :
Converted by
Mathematica
April 18, 2001
![[Graphics:../Images/d2fact_gr_11.gif]](../Images/d2fact_gr_11.gif)
![[Graphics:../Images/d2fact_gr_12.gif]](../Images/d2fact_gr_12.gif)
![[Graphics:../Images/d2fact_gr_13.gif]](../Images/d2fact_gr_13.gif)
![[Graphics:../Images/d2fact_gr_14.gif]](../Images/d2fact_gr_14.gif)
![[Graphics:../Images/d2fact_gr_15.gif]](../Images/d2fact_gr_15.gif)
![[Graphics:../Images/d2fact_gr_16.gif]](../Images/d2fact_gr_16.gif)
![[Graphics:../Images/d2fact_gr_17.gif]](../Images/d2fact_gr_17.gif)
![[Graphics:../Images/d2fact_gr_18.gif]](../Images/d2fact_gr_18.gif)
![[Graphics:../Images/d2fact_gr_19.gif]](../Images/d2fact_gr_19.gif)
![[Graphics:../Images/d2fact_gr_20.gif]](../Images/d2fact_gr_20.gif)