貴州省高考數(shù)學(xué)重點(diǎn)內(nèi)容分類精析doc

2009年貴州省高考數(shù)學(xué)重點(diǎn)內(nèi)容分類精析）Ma,a,aa,aMa,a,a,a．M2123412312aPa,bPab,ab,ab,P．設(shè)b0數(shù)bPQ，M1QM）2xfxfgx．yx1f12．Rfxfxyfxfy2xy(,R)，f361,111516xx2f．fx2x2,x1xf2③b;②ba;③cab；④bca①afx3,fx23(xR,p,pfxxpxp121212fx,fxfxx，fx112fx,fxfx212fxp,p1）求fxx12fx,bab,,abfafb）設(shè)a且pp12ba,n,banm）2(x)fxx()()ffx1fxfxx32312xpxp123323xpxp2x.）12xpxp(x)p(x)pp(pR由于，的最大值為121212pp12322pp，即pp21123pp2f(x)f(x)x[a,b]）1231abyfafbapbp1及，213,xp)px)f(x)113,xp1xp11f(x)[a,b]abba為b）Ox圖122pp2pppplog2）當(dāng)12312,213xpf(x)3p3pf(x)f(x)f(x)xx；121121xpf(x)31333xp233xp2f(x)當(dāng)xpppxppplog2121221322f(x)f(x)；2pxp1f(x)31f(x)232323當(dāng)xp1pxxp2px122f(x與f(x)y12pp1xlog2⑴122203100pxp[(pp)log2]p，21022132xpp在與20121Oxf(x),pxxf(x)110圖2f(x),xxp202f(x),axx[a,b]f(x)）10f(x),xxb20f(x)f(x)f(x)在區(qū)間[a,b]及12(xp)(bp)f(a)fb)323pabp21012ppablog2⑵1231ba(xp(p)b[plog2]22012123ba(x)[a,b]f。2x216xq．fx）qt0),x當(dāng)fxD）問：是否存在常數(shù)t為12t.9ttt1(tt40)e50,0t10,tVt)244(10)(341)50,1012.tt1ti（Ⅰ）該水庫的蓄求量小于的時(shí)期稱為枯水期.以i表示第1月份（i2.7e..10t10時(shí)，Vt()(tt02,xtte244t100t100t4t.②當(dāng)10t12Vt)4(tt50tt0,41解得10t10t1210t12.故3或0t410t12；1235..1311414ct(tt4)cttt由=2424令當(dāng)t)與Vt+80))在8；BByAx）32fxxx3,f(x)3x)cos(x)0π0（，π．yf(x)2πf8πyf(x)6yg(x)g(x)4f(x)3sin(x)cos(x)231πx)x)x．226f(x)xRf(x)f(x)，ππsin(x)x．66ππππxxxx即，6666ππx000．xR66πππ0πf(x)xx．6222ππππ22f(x)2x2．f284ππ(x)ffx．66πππ(x)fx2cos2x2cos2xg663π≤2π2x≤2ππkZ（當(dāng)3π2π≤≤即ππxk()（kZgx63π2πg(shù)(x)kπ，πkZ（k63B及P，BOPDC．OBAO將表示成yABxOP將yx）AQ10OA,coscos10＝1010tan故OB，cos1010110costan，所求函數(shù)關(guān)系式為所以O(shè)ABOPycs2010sincos0y104xxxx－x222x2x220x2000x10ycos1y'2210令y'0得=，246，y是0y當(dāng)當(dāng)'6,0103。yy'，是=y646min33P邊(AAxxRfx1)（，323f,,fffx知2511A1f(x)x)M(,)sin()，323250f(x)sin(x)cosx而，，；3362212cos,cos,(0,)，51323451(),sin1()22，55312455651351365f))coscossinsin。）2,AC2BCABCAB5ABC．,B,Ca,b,ca,2bAB，2DcosB則C交于。EAB。BCD9060150,CBACCD000150，062cosCBEcos4530042在12AE2300故0262sin4515sin9015cos150620004(,2)(x)x)((0,)17f則在633B）(02)B(2)C(31)218ABCDA，，點(diǎn)D722,48(1,2)b(2,m)，2ab＝aa//bc△ABCCa為m(1)，n(cossin)mnacosBbcosAcsinC，,，BA3622131,b,m(m,,使21a22atan23,dmabtan,且cd.cff,m63）12345678926nnn33n3n2ana1aa23aaa456aaaa97810，a，a，a，bba1Sa．，．b124711nnnbn≥nnbSS2nnn1bSnn481k(k≥3)91b≥n21Sbbb，nbSS2n12nnnn2(SS)2(SS)111211，nn1nn1(SS)SSSSSSn2nn1nnn1nn111又Sba12111Sn11n121(n，S．221nnSn222≥n1nn2bSS．n(nnnn1，n，2b，n≥．nn(n1)qq0．1213因?yàn)?21278，21aan8142bqbq2．a(chǎn)2911314k(k≥3)S，bq)22)2kkS2)(k≥．則kk1qk(k12k(k,a,,an≥40d24a（n12na4n1dnn(n≥4b，b12n,a,a,a,a1234。aaaaa(a)a4d01142，即(a2)22314111da1(ad)a(a3d)ad011aaaa322214111da1a或14。dd,a,a,a,aa,a,a,a,a123451245aaaaad)(ad)(a)d02aa3152411110為da3,a,a,,a,a,a當(dāng)6a123n2n1n0aaaa，則必有a，這與d21n3n20a,,aaaa去aan1d1n3n23n20aaaadn61n2n1)nd的nb4。,bb，12n,b,b01xyzn2bbbb（，x1y1z1y1x1z1(byd)(bxd)(bzd)(yxz)d(xz2y)bd即222）11110yxzxz2y與00由bd12xzxz2y與xyz當(dāng)y20by2xzxz2y與故y21dxz2yb0xyzn1z1dbn要1d222，n1)2，）x2,x0(x)()fxxf2x2,x0x00Ay21ayx2xyaAa3(x)xx(ax1,af3232(x)x1在af(x)xxa1a(0,)xf'2y2,y,zx2y3z03）i3(1i)21ibi(a,bR,iab1ia1．1,30a2zaz(ai)2iia2(a3a2)(a1)ia21i)3iR()aiiaa2zi＝.）x1y(3y10ax11xbyx(xbln1y21(x)ax(，bZ)yf(x)(2f39f．xb(x)ff(x)f(x)yy=x12b1，1a2aa，9a，48b.3()fxa或(xb)2b，，b)21因，bZf(x)x．x11xy，y21x1g(x)xx1f(x)x11g(x)a(11)f(x)x1(x)(11)f1，xx．100x01xx1120()11()由fxyxx．0(x201x(1)0x20001x1x1得yx1，0令x．0x101x0yx得y2x1yx(2x2x1)令．000x1yx(11)．1112x12x112x22．02x12x100002．ii1），i4n6an3m，否（注：框圖中的賦值符號(hào)“namaam和n是數(shù)i3。pp0.8n．1110.8n4.248否是nnn1）f(x)logx(a0,a1)alog20則②alog20f(x)logx(a0,a1)aalog20f(x)logx(a0,a1)aalog20f(x)logx(a0,a1)aalog20f(x)logx(a0,a1)aa:q:pD）．(p)qpq．(p)(q)D．(p)(q)．qp(p)(q)為）0a0aa1a(nN)a，a，，22．1n1n1nnn記Saaa．n12n111Tn．1aaa)aa)a)11212nnNaaSn2T3。nn1nn1xx102aana．212k(kN)aakn*，k1a(aa1)(aa1)(aa)(aa1)a2222k1kk2k2k1k1k2k1k2k1aa．k1k2k1aannn1nN*aann1a1an），得，，1（n≥2（Ⅱ）證明：由a2，k2k1k1ka(aaa)(n1)a．221n23n0Sn1a2．a(chǎn)1nnaa1a2a1a1Sn2．n由a及得22nn1n1nn1n1aa1a≥2a≤(kn1na22k11a2ak1k1kkk1k1a≤(a≥，naa)(1a)2an234n211aa≤(n≥，nnn2aa)a)2(aa)22n2n22223n211n≥3T11n3，22n2TTT3T．123n）；），18的33C171633，318121P.17163681與p221.16p；12.AB121PB1p2163534p或4411314,PA,PB,PBPA2241112P0PAPBB24321112P1PAPBBCPBPBPA1224321131172224442321392P3PAPBB2432153221013PPPP01231715329P3232321715901232E32323232D2的E1DED412EP44）CGHI1A2AFAHEGDBBBBCBCBIEEEEDE①②③④F圖1圖222S11213.223）22ABCD中，CBCDADBD，F(xiàn)分BABBDEF//ACDEFCBCD面．面ABBD，DCA∥