I Z) =: h(.) /Kt) = ^ h

Çî

26o CALCUL DIFFÉRENTIEL.

/ \ « I Sf 0(4-1 (O)

•2 ;?a+i(o) \ 3 / Sra+i(o) 24 3ra+t(o)

&Uo) &2(o)"^2r3(o) "^3r4(o)'

( 2:^3(2^1 4t)=2r3(p|T)-t-2r4(HT),

^.^ 6 = s/TUT^ = --^^ = \-^^^' -y^^-'-^-'JL

xq-

C'ifa m| tO], 4f"3) V ^1 — 63 3*2 f M ' Wi, W3) (/gj — e2'3'3(i* I <J>i, (O3)

a'2(2M>i,4w3) ^e;=:i;cf.2(uIwj,W3) + v^ei— e2a'3(a|u)i,t03)

FORMULES