常 用 积 分 公 式
(一)含有ax b +的积分(0a ≠)
1.d x ax b +⎰=1ln ax b C a ++
2.()d ax b x μ+⎰=11()(1)
ax b C a μμ++++(1μ≠-) 3.d x x ax b +⎰=21(ln )ax b b ax b C a +-++
4.2d x x ax b +⎰=22311()2()ln 2ax b b ax b b ax b C a ⎡⎤+-++++⎢⎥⎣⎦
5.d ()x x ax b +⎰=1ln ax b C b x +-+
6.2d ()
x x ax b +⎰=21ln a ax b C bx b x +-++ 7.2d ()x x ax b +⎰=21(ln )b ax b C a ax b
++++ 8.22d ()x x ax b +⎰=2
31(2ln )b ax b b ax b C a ax b
+-+-++ 9.2d ()x x ax b +⎰=2
11ln ()ax b C b ax b b x +-++
的积分
10.x C +
11.x ⎰=22(3215ax b C a
-
12.x x ⎰=22232(15128105a x abx b C a -+
13.x
⎰=22(23ax b C a -
14
.2x ⎰
=22232(34815a x abx b C a -+ 15
.⎰
(0)(0)C b C b ⎧+>< 16
.⎰
2a b - 17.d x x ⎰
=b ⎰18.2d x x ⎰
=2a + (三)含有22x a ±的积分
19.22d x x a +⎰=1arctan x C a a
+ 20.22d ()n x x a +⎰=2221222123d 2(1)()2(1)()n n x n x n a x a n a x a ---+-+-+⎰
21.22d x x a -⎰=1ln 2x a C a x a -++
指数函数积分
(四)含有2(0)ax b a +>的积分
22.2d x ax b +⎰
=(0)(0)C b C b ⎧+>+< 23.2d x x ax b +⎰=21ln 2ax b C a ++
24.2
2d x x ax b +⎰=2d x
b
x
a a ax
b -+⎰
25.2d ()x
x ax b +⎰=2
21ln 2x C b ax b ++
26.22d ()x x ax b +⎰=21d a
x
bx b ax b --+⎰
27.32d ()x x ax b +⎰=22221
ln 22ax b a C b x bx +-+
28.22d ()x ax b +⎰=221d 2()2x
x
b ax b b ax b +++⎰
(五)含有2ax bx c ++(0)a >的积分
29.2d x ax bx c ++⎰
=22(4)(4)C
b a
c C
b a
c +<+> 30.2
d x x ax bx c ++⎰=221d ln 22b x
ax bx c a a ax bx c
++-++⎰
(0)a >的积分
31
.⎰=1arsh x C a +
=ln(x C ++
32
C +
33
.x ⎰
C
34
.x
=C +
35.2
x 2ln(2a x C +
36.2
x =ln(x C +++
37.
⎰1ln a C a x -+
38.
⎰C +
39.x 2
ln(2a x C ++
40.
x =2243(25ln(88
x x a a x C ++
41.x ⎰C +
42.x x ⎰=4
22(2ln(88x a x a x C +++
43.x ⎰a C +
44.
x ⎰=ln(x C +++
(0)a >的积分
45.
⎰=1arch x x C x a
+=ln x C + 46.
C +
47.
x ⎰C
48.
x =C +
49.2
x 2ln 2a x C +++
50.2
x =ln x C +++ 51.
⎰1arccos a C a x +
52.
⎰2C a x +
53.x 2
ln 2
a x C -++
54.
x =2243(25ln 88
x x a a x C -++
55.x ⎰C
56.x x ⎰=422(2ln 88x a x a x C -+
57.x ⎰arccos a a C x -+
58.x ⎰=ln x C +++
(0)a >的积分
59.
⎰=arcsin x C a
+ 60.
C +

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