4 
MEMORIAS CIENTlFICAS I LITER ARIAS 
+ an— 1 1 (b x + c x 2 + . • • ) 
+ n ^ 1 - a n ~ 2 / (b x+c x 2 + .... ) 2 
+ n(n-I)(n -2 L/(bxtci , + 
8. / x 2 (a — x) 3 dx 
=/ (a 3 x 2 — 3 a 2 x 3 + 3 a x T — x 5 )dx 
= -4- a 3 x 3 — 4" a2x4 + 4“ ax5 — 4” x<? • 
2 4 5 6 
9. /(a + bx 2 ) 3 (a — bx 3 )2dx 
= a 5 x — a 4 bx 3 — “»a 4 bx 4 + a 3 b 2 x 5 ~-a s b 2 x e 
u O 
-f 4r (a 2 b 3 + a ' 3 b^)x 7 — a 2 b 3 x 8 -f -“a 2 b 3 x 9 
ab 4 x 10 -|~-p]“ a b 4 x 11 + b 5 x 13 . 
10 . 
/ 
a (x — bV 
nx ( 
d x 
= — f (: 
n 0 
x — b) 3 x— 4 dx 
