:i63 

 P" ^p"^- d{p"%) --&C. 



F" = /'I — &c. 



&c. 

 q = ql- d(^q'l) H- d^{q"l) - d' {q'D -^ &C. 

 q =q'C - d{q"i) -^ d^{q"'i) -&C. 

 q = q"^ _ d {q"i ) + &C. 

 Q"' = ^"^ — (S-c. 



i? = r? — d{r"i^ -H <iUr"^) - c/^ (r'"^) -H fi-c. 

 i?' = r'P - dir"i) -H J^(/"g) — &c. 

 R' -- r'9 — d (/"f ) — 6-r. 



R" = /"^ — e-c. 



&c. / 



5. = i? — ^(/n -4- d^{s'^) — d'i^'"^) -+- &c, 



S' == / ^ ^ ^ ( /'I ) -^ ^^ ( s"^ ) — 6c. 



S" = s'i — ^ ( s'"^ ) -+- fi-c. 



on aura 



•+■ P"B(p ■+■ P'd ^ <p -H P'"^^ S ^ -H &c. 



H- Q' S X -4- Q V S X -H Q'r/^ S X -+■ 6-0. 



•+- R'lj ■+■ R'dly -4- R"d''Sy -h &c. 



-*■ 5' S { -4- 5 " </ ^ ^ -+- S"d' i I ■+• &c. 



-+• &c. = a une conflante (■^) 



Suppofons encore pour abreger davantage 



■^ =: Pl<p -^ Q_% X -*- Rty -^ SI I -^ &c. 



& 



n =^ P'l(p -h P"dl (p -^ P"'d^l<p -4- fi-c. 



-f- Q' S X -J- Q"<^ Sx -+- Q'"^^ Ix -h &c. 

 -^ Rly -^ R'dly H- R"d'ly -+■ ^-c. 

 H- ^y S ^ -1- J"^S { -i- S"'d' 1 1 -^ &c. 



enforte 



