:QVJE VTDmTVR TLVS QVAM T>ET. 107 



:Sit Mzz2nxj et ¥zz.xy—nx-ny 9 tnt 



7) x xyy-\--2n xy z -\-nnxx-\-n nyy -\-2nn xy-znaxynn 



8) xxzz-{-2nxyz-\-nnxx~\-nnzz-r\-2n(n -a)xz~u 

 ■9) yyzz-\-2 n.xy z-\-nnyy-\-nnzz-\-2 n(n-a)yzzz:D 



;Sit M — - (a-\- x-\-y -\-z) et P == x -\-y - s, erit 



10) aa — ^.xz — ^yzzz.u 



11) aa—^xy—^yzzzu 



12) aa — qxy—^xz — u 



iSit Mz=:-n(a+x-\-y+z) et Pz=xy-\- xz-\-yz+ n y erk 

 .13) (^ + ^s+jsJ^w^^+x^ + ^^ + ^w+w^^ci-. 



Co.ro 11. 1. 



117. Sit n.z=z2.a 7 et tfz=i, atque liis eondi- 

 itionibus : 



x x -\-y -h z zzru (x -\-y)*-\- zzzu 



yy-\-x-\-zzzu ,(x-\-z) z -\-yzz: u 



zz-\-x -\-yzzn (y-\-z) 2 -\-xzzm 



^fatisfiet ponendo x-\-y-\~zzz \. ' ) 



Coroll. 2. 



*.8. Sit «^izig, atque liis conditionibns:: 

 .amjj -\-2xyz-\- xx -\-yy zzzn 

 xxzz-\-2xyz-\-xx-\-zzzzu 

 jyzz-\-2.xyz-\-yy-\-zzzzu 

 fatisfiet ponendo x -$-y -\- zzzz 1. 



O s Coroll. 



