下载最新免费模拟卷,到公众号:一枚试卷君哈三中2022—2023学年度上学期高三学年第一次验收考试数学答案123456789101112ADCBABDCACDACBDABC13.5314.4,015.()30sin32(0)12httt16.0,117.(1)27sin2cos2cos22cos12449(2)coscos4441322624coscossinsin4453531518.(1)()22ln,()22222'()2,'()2,(2).(1)(22)(2)'()220'(),(01)(1)0(01)(1)111(0)(1)(fxxxfeefxfeyxxeexaxfxxxafxxaaaa切线方程:,时,单减区间:,,单增区间:,②当时,单减区间:,,单增区间:,③当时,单减区间:,-和,,单增区间:-①当)1(0)1110(0,1)()(1)0(01)(1)111(0)(1)()1(0)110(01)()(1aaaaaaaaaaa,1④当时,单减区间:,⑤当时,单减区间:和-,,单增区间:,-综上,当时,单减区间:,,单增区间:,当时,单减区间:,-和,,单增区间:-,1当时,单减区间:,当时,单减区间:,和-,,单增区间:,1).a-119.(1)()3sin(2)3211(,),(1,3).62221(2)()()3sin(2),32511(0,)(,).1212fxxkkZgxfxxx,对称中心:,值域:当时,单增区间:121212121212121220.(1),,112()()()0,11(1)(1)()(),().xxxxxxxxRxxRxxeeeefxfxeeeefxfxfxR定义域:,且在上单调递增11(2)()(),()11(?3)(392)(392)·33921231,3(3,)324()1,'()0,()(3)34.3xxxxxxxxxxxxxxxeefxfxfxeefkffkxkttgttgtgtgtk为奇函数,对任意恒成立令,21(1)20540kkT1052235721504360082xxxxxxxf(2)当时600860032322088348034334333xxxx当且仅当311x时等号成立.当105x时,当7x时,937minff所以,当311x时,xf取得最小值,且最小值为2083万元.22.(1)证明略.(2)10ae(3)略50x下载最新免费模拟卷,到公众号:一枚试卷君