CIRCA TAirOCHRONISMFM. 35 



^hpc^--^ y — -L^-+-2H'i-2)("^J5.) -bpc''-- etc. atque 



§. 16. Inuementur igltur littcrae A, B, C, etc, 



7l~l 



ifi leqmtur A — vZT.tz— l^' — , i^tque 13 — 



n-3 «-L 



— : ;>( : n -t-i )(2 n— 1-)^": 2 (^ _ 2 /;( 2 n-f- ij( ;n- 1 ) ( :n- 3 )pg ^ ^ ,.- 



■ r7^3 . v_ 1 . ;_ 1 ' 1.3 s . V— i -i— i ^'■^' 



n— i 

 hnc 



Atque E = /.6% F=:'-'^ , G = ^(ZL-'),-^, H rzH 



;j.n.(n— i)'n-2)^.n— 3 £[--. Pj-Q curiui ittique quaefita re- 

 1.2.3 



Tt J_ 



perkur ifta acqnatio d s — ^:^^]^^ ( H^ c ^ H- 



n — 3^ n — 5_ 



,(2 71-4- 1 ).(_2±nlJr 2 .^. I . (;>:-+-i:(:?i— I j(;n— 3) , 2^-i;2_j_ 



etc.'; 4- /^r/.v(c-«^-^.— .v-l-'^T^V"-^v^-|-^^^^ 



^-3_^etc.)=./.u--+-A0''^/A--B^-T rr:^; -i- 



{ 2n-|-i) (j:_n^M_)x I ( 2n- (-i )(2n- 1 )(:n-3) j:- ■ . 



i. 3.' cyc ^^ 1. 3. ?. c^vc -T- eic; 



§. 17. Qiianquam hic pro curua data hacc tan- 

 tuin aeqnatio dr — hf^dt cll affiimta , tamen ad omnes 

 prorfus curuns cxemphim hoc accommodari poteft. Sit 

 enim curua data iib expofita aequatione d r ~ ht"-dt 

 '-\-'^t^dt-\-Qt'^ dt~\- etc. Tum quaeratur aequatio 

 pro curua quaehta primo ex hac tantum aequatione dr 

 ~At*^dt^ et fit aequatio rdiiltans ds — Vdx. Dein- 

 de fumatar aequatio dr — Bt^dt proueniatque aequatio 

 d£Zz.Qjix. Similiter ex aequationibus dr zz.Qt^ dt ^ 



