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2、?11?1?2? 1?1?nnxx?1?n?mxn?n? ?Axn n? ?lim?mA?2?nnxx?1?n?Mxn?n? ?Axn n? ?lim?MA? 2? ? ? ? ?xhxfxg? ?Axg?lim? ?Axh?lim? ?Axf?lim3? 1?1sinlim 0? ?xxx? ? 2 ?ennn? ?11lim?euuu? ?11lim?evv v? ?101lim4?5? ? ? ? ?0?x? ?nn xxnxxxe0! 212 ?121253 0!121! 5! 3sin? ?nn nxnxxxxx?nn nxnxxxx2242 0!21! 4! 21cos? ?nn
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4、000limxfxxfxxfx?8? ?1011limdxxfnkfnnkn?1?0x? ?xfy ? ?xf?0x?0x? ?xf?2? ? ?ba,? ?xf? 1? ? ?xf?ba,? ?xf?ba,? 2? ? ?xf?ba,?M?m?M?m?Mxf?0?ba,?0x?ba,?x? ?Mxf?M? ?xf?ba,? ?m? 3? ? ?xf?ba,? ?M?m? ?m?M?c?ba,? ?cf? ?xf?ba,? ?af? ?bf?ba,? ?0?f? ?1? ?0?c? ?0?cd?1?xx?dxxxd1?xxcossin?xdxxdcossin?xxsincos?xdxxdsin
5、cos?xx2sectan?xdxxd2sectan?xx2csccot?xdxxd2csccot?xxxtansecsec?xdxxxdtansecsec?xxxcotcsccsc?xdxxxdcotcsccsc?axxaln1log?1, 0?aaaxdxxdalnlog?1, 0?aa?xx1ln?dxxxd1ln?aaaxxln?1, 0?aaadxadaxxln?1, 0?aa?-?Edited by ? 2005 ? 10 ?3? ?xxee?dxedexx? 211arcsin xx ?dx xxd 211arcsin ? 211arccos xx ?dx xxd 211arcc
6、os ?211arctanxx?dxxxd211arctan?211cotxxarc?dxxxdarc211cot? 22221ln axaxx ?dx axaxxd 22221ln ? 22221ln axaxx ?dx axaxxd 22221ln ?2? ? ? ? ?xgxfxgxf? ? ? ? ? ? ? ? ?xgxfxgxfxgxf? ? ? ? ? ? ? ? ? ? ? ?xgxgxfxgxf xgxf2? ? ?0?xg3? ?ufy ? ?xu? ? ?x?x? ?uf?u? ?xfy?x? ? ?xxfdxdu dudy dxdy? ? ? ?dxxxfduufdy?
7、 ?duufdy?u?4? ?tx? ?ty? ?xyy ? ? ?t? ?t? ?0? t? ? ? ?tt dxdy ? ? ?0? t? ? ? ? ? ? ? ?3221tttttdtdxdtdxdyddxdxdyddxyd? ? ? ? ? ?5? ?xfy ? ?ygx ? ?0? xf? ? ? ? ?ygfxfyg?11? ?0? xf? ? ? ?dxdydxxfddyygdyg11? ? ? ? ? ? ? ? ? ?33ygfygfxfxf ? ? ? ?0? xf6? ?xyy ?0,?yxF?y?0,?yxF?x?y? ? ?y? ?y?7? ?y? ? ? ? ?
8、? ? ?xgxfy ? ? ? ? ? ? ?-?Edited by ? 2005 ? 10 ?4? ? ?xfxgeyln?8? ?xf?0x? ?xf?0x?9?n?2?n?,?yy? ? ?ny?n?1?xey ? ? ?xney?2?1, 0?aaayx? ?nxnaayln?3?xysin? ? ?2sin?nxyn?4?xycos? ? ?2cos?nxyn(5) xyln? ? ?nnnxny?!111?n? ? ? ? ? ? ? ? ?nkknkk nnxvxuCxvxu0? ?! knknCk n? ? ? ?xuxu?0? ? ? ?xvxv?0? ?xu? ?xv?n? ? ? ?xf?1?ba,?2?ba,?3? ? ?bfaf?ba,? ?0?f? ?xf?1?ba,?2?ba,?ba,? ? ? ?fabafbf? ? ? ?abfafbf? ?ba?xxxfxfxxf?000?10?0x?a?b?x?1? ? ?xf?ba,? ? ?0? xf? ? ?xf?ba,? 2? ?xf? ?xg?ba,? ? ?xgxf?ba,? ? ?cxgxf?c? ? ?xf? ?xg?1?,ba?2?ba,? ?0? xg?
