PAR J. PLANA 



Toil irouveia qu'cn ccrivaiit, comme precedemment ; 



f{x) — hfXx, a, h, c)-^gf^{x,a, b, c) , 



Ion a ; 



I 



(It 



a 'J (e*"'— i) {]\'smOt-i-yi{.y^^i -cosot — lacx.sm^t) 



Li — ■iiiv(i — i')x 

 dt 



_ \j_ f <h 



/ t X /-. / N * ' ^vViV f (It 

 35 1 ) ... f,{x, a, b, c)= . 1 '-^. I -. i-TT Yfi— 



2a c — ax 



'N.y^ f' (fv— Y'R.y^i)dt.i 



ac ']{e-''"—i)R{aU"-^R.y^i- 



byH.y—x f (fV— ]v^'-R■V=^)</^si n^f 



■ cT.x) 



byN.y- 



N. yilT r (TF-^ T'R.y-x)dt.sxnBt 

 ac '][e''''—i)R(uU"—R.y—->—cT.x) ' 



O 



(252) . . . / (.r, 0, a, c)=— 7 f^r-- 1 == i — ; ttt— 



o 



_y^ C <n 



h J {e'''" — i){'K' sni^t^yH .y::^^ .cos^t — nbc X .sm$t) 



_v^ C <it 



