2
x +x +
2x + l ,
(x2+x+2)1
2x + 1
dx
(;r1 +x+ 2 )*
3 . 5
2 2
■x2 + x + 2 = t ■(2x + X)dx = dt
+ C =
+ C
_1_
(W)(x3 +x+2)(Mł
ni
(x1+x + 2)2
+— = —t>
kix =
■n/7 f
dt
2 J
\7 3 1 -r +-4 4
1
4
' 1.3 7
(x+-)1 +-