C 'E L E S T I V M. sss 



s.x~xx-\-^x' -faAcof. 0) 4-2aBcor2u +3aCcof.3wi:o 

 -aaAB — ^aaAA — aaAB 

 + ia'A' -laaAC -f-^ 

 — ~ 4-^a*AAB H-.^AB 



-laA* 4-**AA +ia'A' 



-|AC 

 — laAAB. 



15, Ad valorem ipfius x hinc definiendurh po» 

 namus breuitatis gratia 



(a--^)A-(aa-i-|)ABH-ia(aa-3)A'=r.§( 



i^iB-^-^-^^AA-sg 

 35_|— C-^^^-^AB4-ia(aa-i)A^-^ 

 Tt fit 2/(i+;i:)4-§(cor.a) + S5cof:263-f (Jcor.acii^o 



— t S co/. co — j 95 co/. 2 0) — I ffco/. 3 &) 



et I -1-*=^ * 

 ynde conciudimus fore 



;»; = - i 5t cof. co - 5 S5 cof. 2 u- 1 ^ cof: 3 a 



-h'«StS5 H-T.SiSi -f-^Si«5 



Verum ne in cakulos nimis taediofos immergamur, rem 

 aliquanto minus curate expediamus, negledloque angulo 

 tdplo, "vt fit -»1 — A fin. cj -+ B fin. 2 u, habebimus 



^=^--^~Acof. a)-^-^*T^Bcof i 0) 



H ,6aa AA 



Aaaa 2 vbi 



