2020年高考全国卷1文科数学解析

2020I122B34125601.2340Axxx4,1,3,5BxABA.4,1B.1,5C.3,5D.1,3D234014Axxxxx1,3AB.D2.312ziizA.0B.1C.2D.2C312121ziiiii112z.C3.A.514B.512C.514D.512CPOABCDPOhODaCDM222aPMh2221222ahah422440haha42424210hhaa2222112422ahhaa22hta154t111535625154248164.C4.OABCDOABCD33A.15B.25C.12D.45A5310.AOCBOD21105.A5.yxC20,1,2,,20iixyiL10C40CyxA.yabxB.2yabxC.xyabeD.lnyabxDD6.2260xyx1,2A.1B.2C.3D.4B1,21,2223102222223222B7.cos6fxwx,fxA.109B.76C.43D.32C44cos0996fwQ43,139624wkwk2839Twk1k43T.C8.3log42a4aA.116B.19C.18D.16B23321log3log4log2a421loglog3914449a.B9.nA.17B.19C.21D.23C1S3n13S5n135S7nL13521100mL10m10m100S11m100S211121n10.na1231aaa2342aaa678aaaA.12B.24C.30D.32D2341232aaaqaaa446782342232aaaaaaqD11.1F2FC2213yxOPC2OP12PFFDA.72B.3C.52D.2B2134c2c2OPQ1290FPF11PFr22PFr221216rr122rr21212216rrrr126rr121132PFFSrrDB.12.ABCO1OeABCD1Oe41ABBCACOOOA.64B.48C.36D.32AABCD1r214r12rABCD12sin60ABro23AB12BO123OOOB1244R2464SRA452013.xy2201010xyxyy7zxy17zxy1177yxz1177yxz1177yxz1,0A7zxy1.14.1,1ar1,24bmmrabrrm5abrr0abrr1240mm5m15.ln1yxx22yx'11yx00,xy011=2x0=1x1,2221yx2yx16.na+2+131nnnaan165401a7n+2+31nnaan246810121416Saaaaaaaa3213613101314192n+231nnaan+231nnaan31311aa53331aa2321nnaan1131322nnaan2111322nnnaa13515Saaaa22221317824614357+15422a2222131784123735715422a1781563783622a118420288392aa1928392540SSa17a222121126nnnn7017~2122236017.12(:)ABCD.:ABC905020;D5025/20/.100:ABCD40202020ABCD281734211A;2100?12572521A4021005A2871002529025405025202025202550201500151001009020285020172020347021101001510Q18.12ABCVABCabc.150Bo.13ac27bABCV22sin3sin2ACC.13212C12222cosbacacB2223283232ccc2c1sin32ABCSacB2sinsinABC52sin3sin62CC2sin62C12C19.12DOABCVPDO90APCo(1)PABPAC(2)2DO3PABC.12681ABPOABABCOPCOABPC90APCABPCPCPAPCPABQPCPACPACPAB2rlQ3Srl3rlQ2222DOlr1r3lABC22sin60ACr3ACQPCPA90APC62PARtPAO22212POPAOA22PO1121633sin60=33228PABCABCVPOS20.122xfxeax.11afx2fxa.1;21,e11a2xfxex1xfxe,0x0fx0,x0fxfx,00,2xfxea0a0fxfxR0a0fxlnxalnxa0fxlnxa0fxfx,lnaln,aminlnln2fxfaaaaln0faln20aaa1aea1,e21.12AB222:11xEyaaGE8AGGB.P6xPAECPBED.1E2CD.12219xy;21,0Aa,0Ba0,1G2,1,118AGGBaaa3a3aE2219xy23,0BP06,y01yBP33oyyx223319oyyxxy222200016990yxyy2020631Dyxy2020331Dyxy02021Dyyy2002200332,11yyDyy3,0A06,PyAP039yyx223919oyyxxy2222000969810yxyxy202098139ACCyxxxy20202739Cyxy02069Cyyy20022002736,99yyCyyNx.,0NnNCNDkk0220062739NCykyny020022002021233331NDyyykynynyNCNDkk32n.CD3,0210222322.4-410xOy1Ccossinkkxtyttx2C4cos16sin30.11k1C24k1C2C.11C(0,0)1211,4411kcossinxtytt1C221xy(0,0)124k44cossinxtytt2C41630xy444cos16sin30tt4444cos4sin12sin30ttt221cos24cos21233cos210cos202ttttcos20t10cos23t24tk324tkkZ11,4423.4-5103121fxxx.1yfx21fxfx.1276xx11x3fxx113x51fxx13x3fxxyfx213x3121311211xxxx3433xx333433xxx76x76xx