hincque 



jj."- ( w' -I- W )' -h «' (4 - ( ;/;' _f . ;;; )'" - 4 A (/«'+;//) ) = O , 

 atqiii ob 



2 ( I -;/-)=: (X + v) (;;;' + ;;;), crit ;/* i: i - ^2l±i1 (,;;' + ;;;) , 



vnde dcmum fict 



|uL'(;;;'+w)=+( i - -^^ (;;i'+w)) (+-(w'+;;/)'-4X (;//'+;//) )zo, 

 quae euoluta pracbct : 



(^) (;«' -t- my -\- (m' -\- ;//)' (|j.' - i + 2 X (X + >')) 

 - (;;/'-f-;/7) (6 X -^ ^ >) ^- + = o , 

 flUC pofito !!^i±J!' — ^; 



(X + y)^' + 9'(;x'-i + 2X(\ + v))-y(!X + v)+i = o, 

 cuius tamcn aequationis icfolutioncm vltcrius profcqui i»- 

 Ttile forct. 



§. 1$. Qucmndmodum rcfolutio Problcmatis vltf- 

 mo loco allati , pcr rcrolutioncm acquationis biquadraticac 

 abfohiitur , ita fdcilc pcrlpicitur rcliquorum Problcmatum 

 fokitioncs, in tcrminis Algcbraicis cxprcfTas nd acqnationcs 

 quadraticas rcduci ; idcoquc fingulas harum folutionum du- 

 pliccs dari , quab qucmadmodum comparatas cflc oportct, 

 runc accuratius cxpcndcrc haud inutiic crit , quum id iu 

 pracccdcntibus planc fit practcrmidiim. Quod igitur atti- 

 nct problcma Primum, Oatim patct pro angulo i((P' + (P) 

 duplicem cmcrgerc valorcm cx formula 



tang. ; {(^^ -\-(p::z cot. ; ((]:' - (p]. ,-,^7^, , 



fi 



