DES Sciences. 4^,, 



P R O B L E M E X I. 



(14.) Sommer la fuite S =z un. (m dtz çj ~i~ f,n. 

 '{m rt 2 ^; -^ /in. (m ± 3 ^y ^ f,„. ^^^ _^ ^ , 



-H fin. (m :±^ ^ q ) -j- 



H- /în, ^w li: nq)I 



Solution. 

 On a (théorèmes I & II), 



fln. ^;;; ± ^ ; — fin. ;;, cof; ^ ^ cof. ;„ fi^,. ^, 

 lîn. (m ^ 2qJ — /i,. „, ,„p. ^^ _^ ^^^_ ^^ ^^_ ^^^_ 



'în. r'« =t 3^; = ^n.. „; cof; 3 .y -i- cof. „; /!„. 3 ,y ; 



S — fin. ,« ^cof, ç H- cof. .y H_ cof. 3 ^ _h cof. 4^ 



"*" -t- cof. ,;^; H- cof ;„ ffnu .y. ^_ fin. ^^ 



, "^ ^"- 3^ H- fi- 4f -f- fin.,/^;.. 



c'eft-à-diie ( prohlèmes I & II), 



S =: fti- »> cof. 7f nn. ,y -t- fin. ^» H- .; y — fi^. g ] 



fin. 2 y ' 



_j^ cof. ». fin, y f , -^,cof. ^ _ ^„r. ; , y _ cof. ^„ ^ , ^ ,^ -, 



I — cof. 2 a »- 



C" C» -f. 7-. 



P R O B L E M E X I I. 



_ (i jO Sommer la fuite S = cof fm ^tz ^J -t- cof. 

 /«/.rfc 2^; _t_ cof. f,n ^ ^,j) ^ ,of. (m ^ 4.^; 



cof. (m -^ nq); 



Solution. 

 On a (théorèmes I II ir IV \ 

 cof. ^/« -^- ^; _ ,of. ;« cof. ^ =H fin. m fih. ^/ 



