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
+-+-++ 9.2
d ()
x
x ax b +⎰
=211ln ()ax b C b ax b b x +-++
的积分
10.x C
11.x ⎰=2
2(3215ax b C a -+
指数函数积分
12.x x ⎰=2223
2(15128105a x abx b C a
-+
13.x
=22
(23ax b C a -+
14
.2x
=222
3
2(34815a x abx b C a -++ 15
=(0)
(0)
C b C
b +><⎧⎪
⎪⎩
16
=2a bx b -- 17
.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 x
x a -⎰=1ln 2x a C a x a
-++ 21.22d ()n x x a +⎰
=22212221
23d 2(1)()2(1)()
n n x n x
n a x a n a x a ---+-+-+⎰ (四)含有2(0)ax b a +>的积分
22.2d x ax b +⎰
=(0)
(0)
x C b C b ⎧+>⎪⎪
+<
23.2d x x ax b +⎰=2
1ln 2ax b C a ++    24.22d 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
29.2
d x ax bx c ++⎰
=22(4)
(4)
C b ac C
b a
c +<+>
30.2d x x ax bx c ++⎰
=2
21d 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
.2x
=ln(x C +++
37
=1C a +    38
2C a x -+ 39
.x
2ln(2
a x C ++ 40
.x
=2243
(25ln(88
x x a a x C ++++
41.x ⎰C
42.x x ⎰=422(2ln(88
x 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.C +
53.x 2ln 2
a x C +
54.x =2243
(25ln 88x x a a x C -+++
55.x ⎰C
56.x
x ⎰=422(2ln 88
x 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 +
61.
x =C      62.x C +
63.2
x =2arcsin 2a x C a + 64.2
x arcsin
x
C a
-+
65.
=1C a +    66.C +
67.x 2arcsin 2a x C a
+
68.x =2243(52arcsin 88x x
a x a C a -+
69.x ⎰=C +
70.x x ⎰=422(2arcsin 88x a x x a C a
-++
71.x ln a a C x
-+
72.x =arcsin x
C a
-
+
(0)a >的积分

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