LOS METODOS DE INTEGHACION 
27 
B 
1 n _ 15 
T’ 
=— 3L(x+l)+ -~L(x— 2)+ L (x + 2) 
(Pauly, 168) 
22 . 
3 x 2 — 2 x + 1 
x 4 -j-2 x 3 — 5x 2 — 6 x 
A B 
+ 
x 
x+1 
C D 
+ +■ 
x— 2 x + 3 
3x 2 + 2x + 1 = A 
x 3 + B 
x 3 + C 
x 3 +DI 
t2x 2 
+ x 2 
+ 4x 2 
— 5 x 
— 6 x 
“t" 3 x 
—6 
| 
X 
2 x 
Iguaiamos los coeficientes de las mismas potencias de x: 
1 
A+BtC+D =0 
2A + B + 4C — D =3 
— 5 A~-6 B + 3 C — 2 D = — 2 
6 A 
= 1 
A = — 
B = 1 
6 
C = 
D 
10 
17 
15 
y= -g- Lx -r L(x + 1) + — L (X — 2) 
JL1 
15 
L (x + 3) 
(x+1) (x— 2) 10 
15 
V x + ]/ (x •+ 3) 
(Timmermans, 262) 
