Biblioteczka Opracowań Matematycznych
22L r dx _ r dx
■^x3+8 ■’(jc + 2)(x2 -2x + 4)
1 A Bx + C _ x2{a +B)+x{-2A + 2B + C)+4A + 2C
(j + 2Xx2-2jc + 4) x + 2 x2 -2x +4 (x + 2Xx2-2x+4)
A + B = O -2A + 2B + C = 0 4A+2C=1
1 r dx
-1 1
—x + -
24f— x~-
/ = ^l^J-4VŁT<& = J7H^2i-Lf 12 = — ln|x + 2|-
12Jx+2 jx2-2x + 4 12 ' 1 24jx2-2x + 4 12 1 1
2x+4
-Ij-,2* 8 (fr=—ln|j+2j—— fiL±^=±,nj,+2|_±|nLr-2x+4+A f- dx
24Jx2-2x+4 12 ł H 24Jx:-2x+4 12 ^ ^ 24 1 * 24>xl-2x-
=/
3^+lr+l /) | B Cx+D_xs(A+Ć)+x2(A+B+2C+D)+x{a+C+2D)+A + B+D
(x+l)2(x2 + l) x+l fc+l)2 + X2 + 1 (x+l)2(x2+l)
/< = -l B = I C = 1 D = 1
A+C = O
-4 + fi + 2C + D = 3 A+C + 2D = 2 A+B+D=1
101/ r X<& r xdx
_ x,(A + C)+x2(2A+ B-2C + D)+x(2A + 2B + 2C -2D)+2B + 2D
x4 + 4
4 = -I 8
B-i
4
c-I
8
o=i
4
NWR'i-** |
l+x l+x2 4 = 1 4 B~I 4 C = — 9 | |
A-B-C=0 A+B-D=0 A-B+C=1 | ||
4+fl+D=0 |
0 = 0 | |
J-I 4 |
f 1 r <& |
+1 f |
I — x 4->l + x |
2 x2 +1 | |
102/ |
* -u II | |
1 | ||
x4+4 (x2-2x + 2 |
(x2 + 2x + |
Ax + B
Cx + D
A+C = O
2A + B-2C + D = 0 2A + 2B + 2C-2D = 0 2B + 2D = \
1 I
—x + -
1 1
-x+—
I = -^—dx + f-^8--—dx---\ X +
'x2 -2x +2 Jx* + 2x + 2 8Jx3-2x + 2 8j
x+2 , 1. 1 .
—-dx = —/, + -I,
x3 + 2x + 2 8 ' 8 *
1, lf 2(x-2) , 1 r2x-2-2 _ 1 r 2r-2, 1 f _
8/,_ 16-’xJ-2x+2 16V-2x+2 ' 16V-2x+2 8V-2x+2
. . i 4,. _ 2|♦ i - - i ta|x’ - 2* - 2| * £-«*(* - O
= ->/ 3x2-2x + 1-
7^3