in case VI 
g wil e;'—e, cn(v) 
es, VBC ev), n= * sn(v).dn(v)’ 
EZS He —e,)e—e,), 
A Pd dt me ) 
Bet (Ee ey ) ’ kk! = 
or, after having expressed the roots ¢,; €,; en ¢,' 621% in A: 
in case II 
é dn(v) zl A+1 
SS \ == rs k? = —_ ’ 
g as sn(v) ’ ten 2A 2A 
in case LV 
é eget bee se) 2) 
Sr it ==; 
5 Pe 2 _sn(r) 2 14À 1+A 
(83 
in case VI 
ö Vi” en(») Vik 
ies —__—. —— ; ey d - 
S 2 sn(v) . dn(v) 2 
Rete MORT SE ee 
BATEN Oe 
Let us substitute these expressions in (14), we then find successively 
in ease II gee ene ee) ‘= : 
Me ah re ie 
1+A d 
m-.égse. IV 6 == WS af Bd ne) ; REGE 
sn») 
ACA") dn) 
m case NIG, 7 ERO ZE 
Let us now choose 
1 
I= + A len 
and for § the expressions $, with the upper sign, we find: 
