第七章：无穷级数.pdfVIP免费

31)1(3213321lim)1]()2()3[(])2()3[(lim111nnnnnnnnnnnn3R3xnnnnnnnnnnn12)3(2)1()1(12)3(33xnnnnnnnnnnnnnn1)2(3)2(11)2(3312)3(3)1(,1)(1limlim)1(anaannnnn,2211)2(2320044nnnxdxndxxnnnnnnnnnn3]12[3])1(2[0)3(33,13123]12[lim3nnnnnnnnnnnnnn)1()1(2)1(111)1()4(yxy1)0(y.2)0(,1)0(yy)1(111122nonnny),1(111122nonnny)1166(51)6)(1()(xxxxxxf541125110411253xx)91(x).91(,)4)(51103(25)1(0xxnnnnn])1(1ln[221ln22xxx12)1()1(nnnnx)02(xnnnxxxxxxxf4044)2()1(2)2(112168)()2(x140)2()1(nnnx)2(xdxxxfnxnn1400)2()1(4)(240)2(24)1(24)(nnnxnxf)2(x].1,1[1122114)1(2)(nnnxnxxS12112)1(21)(nnnxnxS112112)1(21nnnnxxxxarctan21xxxxxxxS02.arctan)1(d)arctan21()(,R04)!4()(nnnxxy),()()4(xyxy,0)0()0()0(,1)0(yyyy,014r.,13,22,1irr,sincos4321xCxCeCeCyxx).cos2(41xeeyxx212321)12)(1()12(limlimxxnnnnxuunnnnnn].1,1[1121121)12()1()12()1(nnnnnnnnxxnnx121)1,1(),()12()1(nnnxxfnnx1121112112)1(2)12(2)1()(nnnnnnnxnnnxxf.12)1(2)(12221nnnxxxf0)0(,0)0(ffxdttfdttfxfxxarctan212)0()()(002xxtdtfdttfxf00arctan2)0()()(]1,1[),1ln(arctan22xxxx1211)12)(12()1()(nnnxnnxSnnnxnxS21112)1()(121112)1(nnnxnxxxarctan42arctan)1(10xdxxS42)12)(12()1(11nnnn022)1,1(,)1(11nnnxxx.]1,1[,12)1()(arctanarctan0012xnnnxx...