2019年高考全国1卷文科数学及答案

182019231504122B053451256013i12iz||z=A2B3C2D12{1,2,3,4,5,6,7}U{2,3,4,5}A{2,3,6,7}BUBAeA{1,6}B{1,7}C{6,7}D{16,7}30.20.32log0.2,2,0.2abcAabcBacbCcabDbca45125120.618512105cm26cmA165cmB175cmC185cmD190cm5fx=2sincosxxxx[]ABCD2861000121000100.464A8B200C616D8157tan255=A23B2+3C23D2+38aba=2babbabA6B3C23D569112122AA=12ABA=12ACA=112ADA=112A10C22221(0,0)xyabab130CA2sin40B2cos40C1sin50D1cos5011ABCABCabcasinAbsinB=4csinCcosA=14bc=A6B5C4D312C12(1,0),(1,0)FFF2CAB.22||2||AFFB1||||ABBFCA2212xyB22132xyC22143xyD22154xy384520132)3(exyxx(0,0)___________14Sn{an}n.13314aSS4=___________153()sin(2)3cos2fxxx___________16ACB=90PABCPC=2PACBACBC3PABC___________7017~2122236017125050401030201295%22()()()()()nadbcKabcdacbdPK2k0.0500.0100.001k3.8416.63510.8281812Sn{an}nS9=a51a3=4{an}2a10Snann481912ABCDA1B1C1D1AA1=4AB=2BAD=60EMNBCBB1A1D.1MNC1DE2CC1DE2012fx=2sinxxcosxxfxfx1fx02x[0fxaxa21.12ABOAB=4MABx+2=01Ax+y=0M2PAMAMP10222322[4-4]10xOyC2221141txttyttOxl2cos3sin1101Cl2Cl23[4-5]10abcabc=11222111abcabc2333()()()24abbcca5820191C2C3B4B5D6C7D8B9A10D11A12B13y=3x145815-4162171400.8500.8300.6500.6222100(40203010)4.76250507030K4.7623.84195%.181nad95Sa140ada3=4124ad18,2adna102nan2114ad(9)(5),2nnnndandS.10a0dnnSa211100nn,1n10n{|110,}nnnN1911,BCME.ME1,BBBC1MEBC112MEBC.N1AD112NDAD.6811=ABDC11=BCAD=MENDMNDEMNED.MN1CDEMN1CDE.2CC1EH.DEBC1DECCDE1CCEDECH.CH1CDECHC1CDECE=1C1C=4117CE41717CH.C1CDE41717.201()()gxfx()cossin1,()cosgxxxxgxxx.(0,)2x()0gx,2x()0gx()gx(0,)2,2.(0)0,0,()22ggg()gx(0,).()fx(0,).2(),()0fafa0.1()fx(0,)0x00,xx()0fx0,xx()0fx()fx00,x0,x.(0)0,()0ff[0,]x()0fx.780,[0,]ax,ax()fxax.a(,0].211M,ABMAB.A+=0xy,ABOMyx(,)Maa.Mx+2=0M|2|ra.||=2AOMOAO2224(2)aa=0a=4a.M=2r=6r.2(1,0)P||||MAMP.(,)MxyM=|+2|,||=2rxAO.MOAO2224(2)xyxM24yx.2:4Cyx(1,0)P1x||=+1MPx.||||=||=+2(+1)=1MAMPrMPxxP.221221111tt22222222141211yttxttC221(1)4yxx.l23110xy.21Ccos,2sinxy.Cl4cos11|2cos23sin11|377.234cos1137Cl7.882312222222,2,2ababbcbccaac1abc222111abbccaabcabbccaabcabc.222111abcabc.2,,abc1abc3333333()()()3()()()abbccaabbcac=3(+)(+)(+)abbcac3(2)(2)(2)abbcac=24.333()()()24abbcca.