60 
MEMORIAS CIEJSTTIFICAS 1 LITERAKIAS 
34. /f(e ax )dx. Sea e ax =0 . • . ax = L0 : 
d 0 1 /• o . 
dd 
ad’ a ^ 0 
(Hermite, I, 255) 
35. 1 2±L d x . Sea L 5 
j V 
d x 
x = z . • . — — = d z 
y = / z d z = L 2 1 / x . 
(Niewenglowski, IT, 145) 
36. y = J “~4~r — • Sea Lx = z . 
x L n x 
dx 
x 
= d z 
r _ d z _ 1 ^ 
“ ~~ z n ~ 1 — n J X ' 
37. y = J V 1 + L 
- dx 0 • T dx 
x — • Sea 1 + L x = z . — = dz 
X X 
= / 1/T d 
2 ... T 3 
z = (1+Lx) 2 
(Bertrand, 8) 
38. y = / —7— f (L x) = / f (z) d z=f L (x). 
J X 
39. y = / sen a x d x. Sea a x=z . * . dx = — d z 
a 
