•rr 



fl8 FORMUtHS D'INTEGRATION &C. 



-*- iK fì *&J * <r3?r ° Sff + "' 3? «^ 



-i-ffir2»H A ( m * +i )-*- rI(ri<r 3 (- y A i/A (' 7, "+3) 

 r *-n«r3Sz' B "-*- i -l-«r3S3 ,m "" 4 " a ) 



<?«■* 



-H <rzo"3 Sx*" — ' -4- 0-3 $3*** ) 



'+. -^F<**— "^A(n)«-iriff3 (44) 



il 



