37^ 
OpascuLA. 
II. 
JDc atquattonc Jecundi ordints ^ vel oequationc 
b. cd u 
g d u h d u 
i d d_ii k d d u 
dx* dTd7 
o dd u 
l_d d^ 
dx d z 
dy dz 
mddu nddu 
Ponatur u — N .e V x-\-Ayy x-\-Bz>. Erunt 
ubi tres tantum indeterminatae , & fex conditiones ; undc 
valor quantitatis u hanc formam fortiri non poteft, ni(i 
Stquationis coefficicnces tribus conditionibus fatisfaciant <- 
Sint dux radices xquationis pro /, /& f; erit 
& valor generalis u , M.e^^^Fx-hAy^x-^-Bz, -f-Ntf^* 
• V X ^ y y X B' 2, , Qui valor non eft legitimus , nifi , 
ponendo pro A ^ B valores fupra alfignatos , tres p nterio- 
res evanelcant acquationes , nec A &i B fimul ciphrac , vel 
aiterutrum infinito xquctur, 
Si ex duobus valoribus unus tantum tribus fatisfaciaC 
conditionibus, erit u aequale termino N e^^ B x -\- Ay^x-^-B * 
plus feriei infinitac. 
Si nullus vaior fatisfaciat xquationibus , u aequale erit 
feriei innnitac . 
Si vei Ay vel B acquatur ciphrx, vel alterutrum infi* 
rito, pro u ufurpari debet forma e^^ F y Ax , y -\- B z> , 
vqI F z Ax, z-^ By , 
c^hB-\-ifi-^flB=,o 
i-h kA-hf» A^ — o 
i-hlB-ho B^ — o 
Si 
