-^:^ ) i<j ( if?- 



z* ff s, exiflme snzVf -— V formuJam dijfercff' 



f/j/?/n X ''-^ ratior.alem ejficcre. 



Solutio. 



Ponatur x — Vf ) = -» cntque 



h x^ , ,• , /":;'' -a 



f-\-gx- b-gzJ^' 



tum autcm rumtis h)garichmis crit 



nlx-l ijz'' ~a)-l^b-gz'') 

 ct diffcrcntiando 



(i X _ f z" -\(fz gz" - ' dz _(b f-ng^z^-^dz , 



T ~ Tz^^T '^' 'b~ fT ~~ {JTTjy^z^) ' 



qnibus valonbus fiibflitutis formula propofita fit rationalis. 



Problema ir. 



§. 2^. Si Jiierii X Juhclio rationalis binariim quan- 

 titatum x" ct s, exijlcnic s — V(' \ formtilam dif' 



j£rcmiakm X ''^* ab omm irraiioiiaHiatc libirarc. 



Sohitio. 



'" a —1— b A*'* 

 Statuatur s—V~— — z, critquc 



hinc 



