【正文】
xFy點(diǎn)的積分曲線過(guò)是 )1,0()( xf2021/12/1 15 )())(()1( xfdxxf ???dxxfdxxfd )())(( ??? ??? Cxfdxxf )()()2(? ?? Cxfxdf )()((三)不定積分的性質(zhì) ( 1) 不定積分與微分互為逆運(yùn)算 2021/12/1 16 ??? ??? dxxgdxxgdxxgxf )()()]()([)3(?? ? dxxfkdxxkf )()()4(dxxfkxfk? ? )]()([ 2211?? ?? dxxfkdxxfk )()( 2211綜合 (3)(4) ( 2) 線性運(yùn)算性質(zhì) 2021/12/1 17 不定積分計(jì)算的基本思想: 求不定積分是求導(dǎo)的逆運(yùn)算 導(dǎo)數(shù)基本公式 —— 積分基本公式 微分法 —— 積分法 反想 逆運(yùn)算 怎樣計(jì)算不定積分? 2021/12/1 18 ?? dxx ?)1(?? dxx1)2(?? xd xs i n)3(?? x dxc o s)4(Cx???11?? )1( ???Cx ?lnCx ?? c o sCx ?s in二、基本積分表 2021/12/1 19 ?? dxa x)5(?? dxe x)6(?? xdx2s e c)7(?? xdx2c s c)8(?? s h x d x)9(?? c h xd x)10(Caax ?ln1Ce x ?Cx ?t a nCx ?? c o tCch x ?Csh x ?2021/12/1 20 ??????????????dxxdxxdxxdxx222211)14(11)13(11)12(11)11(Cx ?a r c s i nCx ?a r c c o sCx ?a r c t a nCxa rc ?c o tCaxaax dx ???? a r c t a n1)15( 222021/12/1 21 Caxaxaaxdx ??????ln21)18(22Caxxadx ????a r c s i n)16(22Cxaxxadx ??????)ln ()17( 2222Cxxx d x ???? c s cc o tlnc s c)20(Cxxxdx ???? s e ct a nlns e c)19(2021/12/1 22 ? ???? dxxxxx )1112(]4[ 23計(jì)算例??????????dxxdxxdxxdxdxx231112原式421 x?[解 ] 221 x? x? x2?x1? C?2021/12/1 23 ? ??dxxx112]5[ 22計(jì)算例dxxx? ????13)1(222原式dxxdx ?????1132 2Cxx ??? a r c t a n32[解 ] 2021/12/