彩788彩票投注

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2019年成人高考高起点数学(理科)真题及答案

2019-10-28 11:42:30   来源:江西成考网    点击:
作者:王老师

  BENSHIJUANFENDIIJUAN(XUANZETI)HEDIIIJUAN(FEIXUANZETI)LIANGBUFENGONG4YE。MANFEN150FEN,KAOSHISHIJIAN120FENZHONG。KAOSHIJIESHUHOU,JIANGBENSHIJUANHEDATIKA- -BINGJIAOHUI。ZHUYISHIXIANG:

  DIIJUAN(XUANZETI,GONG85FEN)

  YI、XUANZETI:BENDATIGONG17XIAOTI,MEIXIAOTI5FEN,GONG85FEN。ZAIMEIGEXIAOTIJICHUDESIGEXUANXIANGZHONG,XUANCHU- -XIANGFUHETIMUYAOQIUDE。

彩788彩票投注  1.SHEQUANJIU=({,23.4),JIHEM=(3,4,ZECuM =

  A.{2,3}B.{2,4]}C(1,4}D.(1,2}

  [DAAN] D .

  [JIEXI]QIUBUJI,SHIJIHEQUESHAODEBUFEN,YINGGAIXUAND

彩788彩票投注  2.HANSHUy = cos4xDEZUIXIAOZHENGZHOUQIWEI

  A.I

  B,π

  D.2π

  [DAAN] c

彩788彩票投注  [JIEXI]BENTIKAOCHALESANJIAOHANSHUDEZHOUQIDEZHISHIDIANZUIXIAOZHENGZHOUQI.SHEYONG: b=0;YI:HANSHUy= kx + bDETUXIANGJINGGUOZUOBIAOYUANDIAN,ZE

彩788彩票投注  A.JIASHIYIDECHONGFENTIAOJIANDANBUSHIBIYAOTIAOJIAN

  B.YONGSHIYIDEBIYAOTIAOJIANDANBUSHICHONGFENTIAOJIAN

彩788彩票投注  C.JIASHIYIDECHONGYAOTIAOJIAN

彩788彩票投注  D.JIAJIBUSHIYIDECHONGFENTIAOJIANYEBUSHIYIDEBIYAOTIAOJIAN

  [DAAN] C

  [JIEXI]BENTIKAOCHALECHONGFENTIAOJIANHEBIYAOTIAOJIANDEZHISHIDIAN,

  4.YIZHItana=1/2,ZEtan(a+π/4)=

  A.-3

  B.YI1/3

  c.1/2

  D.3

  [DAAN] D

  5.HANSHUy=√1-x2“DEDINGYIYUSHI

彩788彩票投注  A. {x|x≥-1}

  B. {xIx≤1}C. {x|x≤-1}

  D. {x|-1≤x≤1} .[DAAN] D

彩788彩票投注  [JIEXI] 1-x°≥0SHI,YUANHANSHUYOUYIYI,JIx°≤1JI(x1-1≤x≤1}6.SHE0

  WU

  D. log;x> 0[DAAN] B

  [JIEXI] 1<2*<2,logx> 0,logax<0

  7.BUDENGSHI|x +DI>DANGDEJIEJIWEIA. {x|-1- -1] ,

  C. {1>0HUOx<-1}D. {xkx<0}[DAAN] C

  [JIEXI] |x+DANG≥DANGJIEDEx+ξ<←HUOx+>JI{x|x>0HUOx<-1}

  8.JIA、YI、BING、DING4RENPAICHENGYIXING,QIZHONGJIA、YIBIXUPAIZAILIANGDUAN,ZEBUTONGDEPAIFAGONGYOU

  A.3ZHONG

  B. 8ZHONG

  C.4ZHONG

  D.24ZHONG

  [DAAN] C

  [JIEXI]JIAYIZHANZAILIANGBIAN,YOU2ZHONGPAIFA,BINGDINGZHANZAIZHONGJIANYOU2ZHONGPAIFA,ZONGJI: 2*3=4.

彩788彩票投注  9,RUOXIANGLIANGa=(1,), b=(1,-1), ZE1/2a-3/2b=;

  A. (-1,2)

彩788彩票投注  B. (1,-2)

  C. (1,2)

  D. (-1,-2)

  【DAAN】 A

  11,y=x2- 4x- DETUXIANGYUxZHOUJIAOYUA.BLIANGDIAN,ZESHUAB SHU=

  A.3

  B 4

  C.5

  D.6

  (DAAN) D

  12【DAAN】c

  13【DAAN】b

  14.RUOZHIXIANmx +y-1= 0YUZHIXIAN4x+ 2y+1= 0PINGXING,ZEm=

  A. -1

  B.0

  C.1

  D.2

  [DAAN] D

彩788彩票投注  [JIEXI]ZHIXIANPINGXING,XIELVXIANGDENG

彩788彩票投注  15.ZAIDENGBISHULIEZHONG,RUOa4a5= 6,ZEa2a3a6a7,=

  A.36

  B.24

  C. 12

  D.6

  [DAAN] A

彩788彩票投注  [JIEXI]DENGBISHULIEXINGZHI,XIAJIAOBIAOZHIHEXIANGDENG,CHENGJIXIANGDENG,ZEasag= azay= azae,ZEazazagaz =36

  16.YIZHIHANSHUf(x)DEDINGYIYUWEIR,QIEf(2x)=4x+ 1,ZEf(1) =

  A.5

  B.3

  C.7

  [DAAN] B

  [JIEXI]LINGx =ZEf(2x)=4x + 1BIANWEIf(2xHAO)=4x2+ 1=3

彩788彩票投注  17.JIA、YIGEDULIDISHEJIYICI,JIZHIJIASHEZHONG10HUANDEGAILVWEI0.9,YISHEZHONG10HUANDEGAILVWEI0.5,ZEJIA、YIDOUSHEZHONG10HUANDEGAILVWEI

  A.0.45

  B.0.25

  C.0.2

  D.0,75

  [DAAN] A

  [JIEXI]JIA、YISHEJISHIDULIDE,ZEJIA、YIDOUSHEZHONG10HUANDEGAILVWEI0.9*0.5=0.45YIXIATIMUQUESHAOTIGAN,DAANJINGONGCANKAO

  ER、TIANKONGTI:BENDATIGONG4XIAOTI,MEIXIAOTI4FEN,GONG16FEN。18, 19.0 20, 4 21,0.7

  SAN、JISUANTI:BENDATIGONG4XIAOTI,22-24 MEIXIAOTI12FEN,25TI13FEN,GONG49FEN。

彩788彩票投注  22.QUESHAOTIGAN,JINGONGCANKAO

  S2o= 20a1 +- d=-55

彩788彩票投注  23.AB= V6

彩788彩票投注  24.QUESHAOTIGAN,JINGONGCANKAO

彩788彩票投注  HANSHUZAI(-∞,-2),(-V2, +oo)DANZENG,(-√2,√2)DANJIAN

  HANSHUZAIx=-VZCHUQUDEJIDAZHIWEIf(-v②)= 8√2+ 1

  函数在x = V2处取得极小值为f(v2)=-8√2+ 1

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