232 
MEMORIAS CIENTIFICAS I LITER ARIAS 
'.—b . 
sec 
+b 
t 
a — b 
yV — b 2 
a-\-b cos x 
. L 1+g+ g = L — L (1— x x 2 ) (Lamb, 92) 
1 — x+x 2 . 
J 1 + 2 X ^ ! + 2 * J 
J It X+X 2 I — x+x 2 
* 9 . y=( S en x) Lx cot e x (a+fc x). (Edwards, 49) 
L i/=L xL sen x+L cot e x (a+fc x) 
— = (sen x) log * cot e* (a+& x) 
d x 
— L sen x+cot x L x- 
x 
2 e* {a-\-b-\-b x) cosec 2 (e* (a+6 x))] 
350. 
z=,enUkh l ±? x ) 
(Boussinesq, 78) 
dy=^ cos \ k % kdL 
l-\-x 
l — x 
kl 
U X 2 
COS l Jr k L | ^ 
