€+ DE VALORE FORMVLAE 



w > rx ; -x-o. 



/*••-" </»(i-* ,x ) * x 



*juae expreflio ad fimpliciorem formam rednci nequit. 



§. 47. Sit nunc etiam :A = a et ( wr=:i erunt- 

 que ternae noftrae expreffiones 



lftdia=zh |f. £ a . * fiue 



/T</o> = /^. 6 -^. i^- . ^* etc. 



•* J. 3 5. 7 9. It II. iS 



II./Trfo — -/cof.?. = + i/ft ita, vt fit 



,n -^ _ __ 3. 2 6. S 1 0. <o '*« »4 - afQ 

 '-* " .1, 3* 5. f* 9* ' * »J. 15 



quod produftum per ibrmulas integrales ita <€xpd- 

 mitur 



fdz (i-<f * 



.111. ftim =/=£f^ ^ =SfE^ 

 quod ergo integrale a termino z =: o , vsque ad 

 2 - r extenfum praebet eundem valorem |' a /i, 

 cuius aequalitatis ratio vtique difficiliime patet. 



§. 48. Sit denique "Vt fupra X = 3 et w = * 

 ac ternae formulae ita fe habebunt 



I. /Trftt ff*. ft III etc = 7^. £4. gS' p etc. 



II. /T </<o = - /cof. ? = - / V= + '£ ita vt flt 



_L — *jlL <" 9 - 5 ' '* . — ' " 

 y 3 — a. ♦' 1. »©* »♦• l6 * a3 * 3 » 



ideo- 



