第三天答案.pdf-2021-02-27-17-11-26-748.pdfVIP免费

第三天1.【答案】16.【解析】223200001sin1sinsincos11limln=lim1limlim36xxxxxxxxxxxxxxx洛必达.2.【答案】12.【解析】22000221sincos112limlimlim1arctan2111xxxxxxxxxxxx洛必达.3.【答案】23.【解析】23223000011sin22sincos1cos2222lim=limlimlim333ln1xxxxxxxxxxxxxxx洛必达.4.【答案】13【解析】22333000023322000011tantantansinsin()===+limlimlimlimtantantan1cossincos11112=limlimlimlim33263xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx洛必达5.【答案】16【解析】3333000022200arctansinarctansinarctansinlim=limlimlim111cos1111+limlim33366xxxxxxxxxxxxxxxxxxxxxxxx洛必达6.【答案】16【解析】233200011arctanarctan11+lim=limlimln(12)266xxxxxxxxxxx洛必达.7.【答案】13.【解析】2222222243000023222000011sinsin2sincos2limlimlimlimsinsin412sin222cos221cos21112limlim=lim=lim.412663xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx洛必达洛必达