w 



I 



Ci -^ z)^ izz 1 -i- 1 z — — z z -^^-^ z^ — etc. et 



^ -^ ■* 3. 6 3. 6.9 



ft 



Ci-^zfzni-^lz — ^-^zz-h ^-^ s^ — iiiiiil s4H_etc. 



^ ^ ■* 3. 6 3.6.9 3.6. ?.I2 



feries fummada erit 



S Z= I -+- I^' -f- l^ . ^ -4- !il:i . =-:iii H- 2:^1« . -^^ilil -f- etC. 



3.3 3.6 3.6 3.6.9 3.6.9 3.6.9.12 3.4.9.12 



cuius ergo fumma, ob fm. |7r~li^, per quadraturam circuii 

 exprimi poterit, eritque SmH^. Eodem modo fi lumamus 

 mzzz^ et « r= I, erit feries fummanda 



S =z iH- ^ . i -4- ^-^ . '-^ + 1^2:1. . h^ -4- IilililL . ±±±1. -4- etc. 



^ ^ 4- * 4- 8 4 «.12 4.8.12 4. J. 12. 16 4.8.12.16 



cuius autem fumma, ob fin. aTrr::-^, erit S~— , feries 



' ^ >a' 37r' 



autem ifta ita fuccinde cxhiberi potcft : 



Sz^i^±(i^ii-u '-s-i-^ _i- ^ -s-^-^-^-^ E u, etc.\ 



EX- 



