微分积分公式大全1
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高等数学微分和积分数学公式(集锦)
(精心总结)
a,0nm,,b0nn,1,axaxa,,,,n01一、 (系数不为0的情况) lim0,,nm,mm,1x,,bxbxb,,,m01,,,nm,
,,
1sinxnxlim()1aao,,二、重要公式(1) (2) (3) ,lim1,,xelim1,,,,nx,0,x0x
,,nlim1n,(4) (5) (6) limarctanx,limtanarcx,,,,nx,,x,,,22
xlimarccot0x,limarccotx,,lim0e,(7) (8) (9) x,,x,,,,,,xxxlime,,lim1x,(10) (11) ,,,,xx,0
x,0三、下列常用等价无穷小关系()
12sinxxtanxxarcsinxxarctanxx 1cos,xx2
,xx11,,,xxln1,xxex,1axa,1ln ,,,,
四、导数的四则运算法则
,,,uuvuv,,,,,,,,,uvuv,,,uvuvuv,, ,,,,,,,2vv,,
五、基本导数公式
,,,1,,c,0sincosxx,xx,,? ? ? ,,,,
22,,,cossinxx,,tansecxx,cotcscxx,,? ? ? ,,,,,,
,,secsectanxxx,,csccsccotxxx,,,? ? ,,,,
1,,xxxx,aaa,ln? ? ? ee,lnx,,,,,,,x
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111,x,,? ? ? ,arcsinx,logarccosx,,,,,,,,a22xaln1,x1,x
1,11,,,? ??? x,1x,arctanx,arccotx,,,,,,,,,,221,x1,x2x
六、高阶导数的运算法则
nn,,,,nn,,,,n,,uxvxuxvx,,,cuxcux,,,,,(1) (2) ,,,,,,,,,,,,,,,,
nnn,,,,nnk,,,n,,kk()uaxbauaxb,,,,,(3) (4) ,,uxvxcuxvx,,,,,,,,,,,,,,,n,,,,k,0
七、基本初等函数的n阶导数公式
nnn,,,,,,,,naxbnaxbxxnxn,!eae,,aaa,ln(1) (2) (3) ,,,,,,
n,,,,,n(4) sinsinaxbaaxbn,,,,,,,,,,,,,2,,
n,,,,,n(5) coscosaxbaaxbn,,,,,,,,,,,,,2,,
n,,nnan,,1!n,,,,1!an,,1nn,,(6) (7) ,,1ln1axb,,,,,,,,,,,,,,1nn,,axb,,,axb,axb,,,,,
八、微分公式与微分运算法则
,,,1dxxdx,,dc,0dxxdxsincos,? ? ? ,,,,,,
22dxxdxcossin,,dxxdxtansec,dxxdxcotcsc,,? ? ? ,,,,,,dxxxdxsecsectan,,dxxxdxcsccsccot,,,? ? ,,,,
1xxxxdeedx,daaadx,ln? ? ? dxdxln,,,,,,,x
111x? ? ? ddx,dxdxarcsin,dxdxarccos,,log,,,,,,a22xaln1,x1,x
11? ? dxdxarctan,dxdxarccot,,,,,,221,x1,x
九、微分运算法则
duvdudv,,,dcucdu,? ? ,,,,
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uvduudv,,,duvvduudv,,? ? d,,,,,2vv,,
十、基本积分公式
,,1xdx,kdxkxc,,xdxc? ? ? ,,,,lnxc,,,,1,x
xaxxxedxec,,cossinxdxxc,,? ? ? adxc,,,,,lna
12sincosxdxxc,,,? ? dxxdxxc,,,sectan,,,2cosx
112? ? ,,,,csccotxdxxcdxxc,,arctan2,,2,sinx1,x
1? dxxc,,arcsin,21,x
十一、下列常用凑微分公式
积分型 换元公式
uaxb,, 1 faxbdxfaxbdaxb,,,,,,,,,,,, a
1,,,,,1, ,fxxdxfxdx,,,,,,ux, ,,,
1 ux,ln fxdxfxdxlnlnln,,,,,,,,,,x
xxxxxfeedxfede,, ,,,,,,ue, ,,
1xxxxx faadxfada,,ua, ,,,,,,,,aln
fxxdxfxdxsincossinsin,, ux,sin,,,,,, ,,
ux,cos fxxdxfxdxcossincoscos,,, ,,,,,,,,
ux,tan 2fxxdxfxdxtansectantan,, ,,,,,,,,
ux,cot 2fxxdxfxdxcotcsccotcot,, ,,,,,,,,
1 fxdxftaxdtaxarctanarcnarcn,,,,,,,,2,,ux,arctan 1,x
1ux,arcsin fxdxfxdxarcsinarcsinarcsin,,,,,,,,,,2 1,x
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十二、补充下面几个积分公式
tanlncosxdxxc,,,cotlnsinxdxxc,, ,,seclnsectanxdxxxc,,,csclncsccotxdxxxc,,, ,,
11xa,11x dxc,,lndxc,,arctan2222,,xaaxa,,2axaa,
1x122 dxc,,arcsindxxxac,,,,ln,,2222aax,xa,
十三、分部积分法公式
naxnaxxedxux,dvedx,?形如,令, ,
nnxxdxsinux,dvxdx,sin形如令, ,
nnxxdxcosux,dvxdx,cos形如令, ,
nnxxdxarctandvxdx,?形如,令ux,arctan, ,
nnxxdxlndvxdx,ux,ln形如,令, ,
axaxaxexdxsinexdxcosuexx,,sin,cos?形如,令均可。 ,,
十四、第二换元积分法中的三角换元公式
222222ax,ax,xa,xat,sinxat,tan(1)xat,sec (2) (3)
【特殊角的三角函数值】
,3,1,sin00,sin0,,(1) (2) (3) (4)) (5) ,,sin1,sinsin23262
,3,1,cos01,cos1,,,(1) (2) (3) (4)) (5) ,,cos0,coscos26232
,3,,tan00,tan0,,(1) (2) (3) (4)不存在 (5) ,tan3,tantan2633
,3,,cot0cot,(1)不存在 (2) (3)(4)(5)不存,cot3,cot0,cot3326
在
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十五、三角函数公式
1.两角和公式
sin()sincoscossinABABAB,,,sin()sincoscossinABABAB,,,
cos()coscossinsinABABAB,,,cos()coscossinsinABABAB,,,
tantanAB,tantanAB, tan()AB,,tan()AB,,1tantan,AB1tantan,AB
cotcot1AB,,cotcot1AB,, cot()AB,,cot()AB,,cotcotBA,cotcotBA,
2.二倍角公式
2222cos2cossin12sin2cos1AAAAA,,,,,,sin22sincosAAA,
2tanA tan2A,21tan,A
3.半角公式
AA1cos,AA1cos, sin,cos,2222
AAA1cossin,AAA1cossin, tan,,cot,,21cos1cos,,AA21cos1cos,,AA
4.和差化积公式
abab,,abab,, sinsin2sincosab,,,sinsin2cossinab,,,2222
abab,,abab,, coscos2coscosab,,,coscos2sinsinab,,,,2222
sinab,,, tantanab,,coscosab,
5.积化和差公式
11 sinsincoscosababab,,,,,coscoscoscosababab,,,,,,,,,,,,,,,,,,,,22
11 sincossinsinababab,,,,cossinsinsinababab,,,,,,,,,,,,,,,,,,,,22
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aaa22tan1tan,2tan222 sina,cosa,tana,aaa2221tan,1tan,1tan,222
7.平方关系
222222sincos1xx,,secn1xtax,,csccot1xx,,
8.倒数关系
tancot1xx,, seccos1xx,, csxxcsin1,, 9.商数关系
sinxcosx tanx,cotx,cosxsinx
十六、几种常见的微分方程
dyfxgydxfxgydy,,01.可分离变量的微分方程: , ,fxgy,,,,,,,,,,,,1122dx
dyy,,2.齐次微分方程: ,f,,dxx,,
dy3.一阶线性非齐次微分方程: 解为: ,,pxyQx,,,,dx
,pxdxpxdx,,,,,,,, yeQxedxc,,,,,,,,,
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