618 
MEMORIAS CIENTIFICAS I LITEEARIAS 
2. / (a + bx)‘M 3 dx= /(a + bx)- d (a + b x)= ~ (a + bx)'^ 
3. / ( a — b xiT^^ (— in b x^— ^ ) d x = 
Ta --- b xii^ ) + 1 
nTl 
4 . 
d u 
— (a + b X + c x-)iii (]) -f- 2 c x) 
ra-r b X 4- c x" jiii + 1 
in -'r 1 
(Hall, 223) 
Fraccionarias. 
o. 
= L(l+x). Peacock, 276; 
6 - J 
dx 
r 
d fx db a; 
X zh a x=ba 
= L (X =h a) 
• /-7- 4^ -- = f (x±a)-nd(x±a)= *— 
J (x±a,)" J ' ' ■ 1— n 
y X a + X- J a + x- 
r 2x— 1 f d u . 
• yx1P^=XTT = J— = 
■x + 1) 
10. j ■ 
11 . 
3 (x — a)" — 2 b 
(x — a)^ — 2 b X 
= L [ (x — a)® — 2 b X 
