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B-2--2--2--7-第1-7-第2----------第1--第2--------()--------第1--第2----------------------------------------------nn2nn1nxxna的nRna000__±na思考:對(duì)于式子n中annRn.當(dāng)n有意義時(shí),nanaa.nnnnnna.n1nmmnnmmnn1snmnt當(dāng)0axxrsa)a.rsrs)ab.rn222222,,a需a.--,22,nnannaaann4若a的;04646a]由46461534231.5632113423.33211632562-3233513①·②ab3.4221351333x1①·=1234②ab3=ab·=abab=aba42242231163xy-xy·-xy36743--0]8+-;31212+-(]((+.-2]145613=xy.231212164356]--·x+·y-231452118=++=.333+-+)+-3+33.3233-3-1212+-(]((+32-1212+·(](2-31+3121212+×((214+·(211814(2.規(guī)律方法:382313(-;2-3311a·a·a·a.3522231122221]3+--=5+23338821499=.32231312112a·a)·a)·(a)]-5--21352212a)·(a·a)0-312a)a.4212124·()].21414]·()).11212])].211214]))))-1.第1課時(shí)指數(shù)函數(shù)的性質(zhì)與圖像·aa0且.x0時(shí),a0axx1124x1xax.x1xxxy1000010100111aaa.2x1e.].2xππ1x1==3xa0且.x.a(chǎn)(D)x84.21]a2=x1.a(chǎn)0且,x14142x222.4262aa(D)x2=-x]a1和1xxx,x12x13y=,-x.x與yCCCCabcdxxxx1234d與1(D)x]a.a(chǎn)a1xxx11.2x()125x≥.2x22a>a(.1252≥=52x1x112≥.xxax)axx);;;aaMtt13.已知集合={xy=2},B={0,2,4},∩B=____________;4x1求函數(shù)=3的定義域和值域.241[解析]要使=2有意義需-4≠0,則x≠4,即A={x≠4,x∈R},4x所以A∩B={0,2}.要使函數(shù)=311有意義,只需2-4>0,解得>2;令t=,則的定24241t>0,由于函數(shù)=3在t∈,+∞上是增函數(shù),故3>1.故函數(shù)3tt24義域?yàn)閧x>2},值域?yàn)閧y>1}.04aax200]a=x2.a(chǎn).]a]當(dāng)1a1xa0xa2a2a=.a(chǎn)0第2課時(shí)指數(shù)函數(shù)的性質(zhì)與圖像的應(yīng)用1.x1a0且1,y軸xaaaaa.4321x)x)xabbaa0且x)xxxxxx)x)當(dāng)1a與1x)x)a0且xxa0且a1時(shí),a0xxx30.1,;0.2;3.155,33,.]a與aaacbcx與ba與bccxx1xx.2.53,xx.0.10.27,0.30,3.10.0.33.1(4)底數(shù)不同、根指數(shù)也不同的兩個(gè)數(shù)比較其大小,要化為同底數(shù)的或化為同指數(shù)的再作比較.1111111123∵2=2=(2)6=86,3=3=(3)6=96而8<9.∴86<96,即2<3233,12又2=2=(2)=32,11011051511055=55=(5),而25<32,∴5<2.253總之,5<2<3.與;1xx1212與2.2]x又.1xx1212()22,22122>.x122()2.1212222ax)2]令x,21則=,21-在Rt;294≥,t24∞.2ttat32=xx.2]令tx=t22=xx,232=xx,.2a,xxxxx203=112-xx-,,xx212a(B))·21x=是Rxm0m],a2-,.a(chǎn)-,2為R1,2212x=-為R21x21xxx122222-xx--=-,x1x1x1x112212122xx-,x1x11221xx,12為R為Rm,即,為R,2-21x222x22<-xx212121xxx.x,f0=0gxx.00xx.00,=a,x2x+x2xxxxm1212.xx-]xx1xx2012122a,即,32,得.3a≥.,22,x,xx,12xx,21),x,22)=,3.4=1412+x1x1234]令=t++y=,x21]=xt=++.22x=++4.2.1對(duì)數(shù)運(yùn)算1.baN與NaaNa0且1baaaa.bae1若2020(A)ab)012312118=與1與7717]若a則2.a(chǎn),,3或.,23Ba0且(A)55aab55t)))5a2;31;412.]3.434=.2412.1212343422343443.a(chǎn)a12532.3135532112122x8==.3--322833454;71;222·cb1.a(chǎn)b77]=.55799=552=.222.a(chǎn)bb規(guī)律方法:Na19(43lg3323]2·)4lg33232334321+.5x1中x2x+]xx,22x+即x,23或x1中x3和.2x+].x020].1x32x1的x.2x+4.2.2對(duì)數(shù)運(yùn)算法則·若.a(chǎn)aaMNaaanaaaaaaa若=c.a(chǎn)cM=MmN.a(chǎn)aM==mnN10且;a;33;555222167412aaaa3333555555265252222.26415255152551255.2用z23xzz22z33zxy=.2b.]232.3232222223bbxyzb==a==.xyzxyz,1163241-==zxtttty111∴-=.1.bbaabab12設(shè)45+mabab]37=21,ab21,3711∴+=11+ab37117=+==.123745m,ab4512ab12又++,mm45即,mmm.mx42y])xy.222y或.x∵1或,y0或.yy]0])xy.222y或.y∴.xy2y4.2.3對(duì)數(shù)函數(shù)的性質(zhì)與圖像第1課時(shí)對(duì)數(shù)函數(shù)的性質(zhì)與圖像aa1231213ay????1111a111001035x232a.(D))ax)x2a(A)2424aa21=;3x-]x],1=3312=>1.x3013431x.0.0.5-x]由,0.534得1由,1∴1>025由51≠x>3和;和;220.50.50.52和4和.0.33[]中將10000.520.33]x在,2.22x在,0.5.0.50.5.0.50.50.50.5.2222,0.30.30.3.0.3.33330設(shè)(D)352baab11221343設(shè)c(B)33ccaa],3322.53434123234<<,33133334.a(chǎn)a0.0]當(dāng)10,1;00,521,第2課時(shí)對(duì)數(shù)函數(shù)的性質(zhì)與圖像的應(yīng)用a0xtaa與t或a.0ataaa431xa取,,,CC、35a12CC的a(A)3443]CC>1241xCCa、CC3123431于1xCCa、C、5341431CCC的a、、、.352341aCCCCa、、、12340且a11ax1ax12ab11]CCb12aa2x2222212aaax(D)2))]由x2或.2225252522x2-2052即≤2a2]]∵xx0R.22xx122(x,22規(guī)律方法:與)求xx又aa2]0]x,22R,令x,221又<t212,12.=a求求uuaaa1x22]x,2,.令x,22.1又<,212.5xa(B)a)]選..[辨析]]設(shè)auaaA2在1ax.xa0且.·11yf.12x1從ffyf.111與f1ff相11f1ff111(D).x0001)10xxx)10x1304452)x12345)10341;.]]1xx22或xx=11212x=x1或,2x11=2111xx221x;2=11xy.2222y2x1x22由e,1y1x21=R且,21,1x=x;221x]x.222222222221111xyxxx2y1x3a,xxx0xx..xxP,1f(B)101aab(C)6534]令00f.1.a(chǎn),a則,a,3或.a(chǎn),24.2]Rx2,x2.]]xx22,2.231x12xαα(1)(0).xyyx趨向于+∞時(shí),圖像在xx0x在0α·若mmx.2mα12]=xxx24是31xxmxmm5或.2m2αmx(B)2113或10223,],mxαxxα02122xn,2四n12341212k]xCx14122211CCCCC的n,.231234xkCykxx12-aa]對(duì)x中x中,aax中x中)aax中x中aa432513324(A)cb43131313132515.x73b24313731313x.21]x=,221122xyy2x在2x2y2,n3則c(A)cc3]xnn32,332且<<.32133-11==33x在∈3x351313)a13]x.2>,323即a∞.1313]x是Rx1313])a1和a+00a23321和a+0<;01和a0.023a,.32·.·xx212xx21y1x000xaxax00a·x[解析]=21=121xx2121444433111132設(shè)x記的2y]=2x2112121x3]f33aaa=aa=3a111++,3a33xx3232]=上10h(B)x311xyxx.221212]CxC2.3x12,,xxxx2x,121212當(dāng)x,2;,1212當(dāng)xxxxx1122125(D)naxaxxaxxxn00a1xn00axc.a(chǎn)αα1;(3)萬人(1年).(?。剑?.012.]];2;23·;3x.x.設(shè)x,x1.012.xyx,xx)x或y).x555)]5.55QQb1.2]b求Q01310a.QQ233Q,Q3a年年]n+,nn22===Nn.3yxc2*x*],,b2x與rx14xx1234)若2.x12x1x12.3=,25,232=+N.).]x)x)2b5.1.1數(shù)據(jù)的收集第1課時(shí)總體與樣本、簡(jiǎn)單隨機(jī)抽樣1.2樣·1161384田23];這879B)]第8、5..6615下6.7.]6157,,..4631214.].5141.41.從NnCabcn是C===.xyzN1]]AC和DB.]2A含nA了6nB55含)]x,6=n,.54含1]CnA.2]CA人=.nn=.員N(B)12.]1=,818.,x則即=,x=,1]]1=.5×;24]將]16]5.1.2數(shù)據(jù)的數(shù)字特征1-n12n12x.n-ninnniiiinniin.-xxxxbb12n12n-ax.xxx56nnkxii?56ini12nnxxxkx.12nixxxx+12xxxxxn212n的xxxi12nxxi為ii為00021n1--nxxxxs=2212nnixxxsbb212n12nas.220·111+52+45+28+120+12+2)=1.nx有nx有nx有nn+1122kk1nnnnn2k1122kk1235],2;..823=,22xx9=,22xx3=,22xx9=22xxx.12ni00xxii1212xxx16=2266240516223411012=.222226.21n-nns=x-x)s=x-x.2222iii1=i1=s.2612121-]x==.s=24221101235122222222222xxxxxx1的1212]aaa12-x=12甲---a-xa-xa-x222=1甲2甲.bbb12-x=12乙---b-xb-xb-x222=1乙2乙乙.a(chǎn)aa和bbb1212--xx-x==,甲----sx-xsx-x]2甲22乙2s=甲乙2]22==.-mxxxxm12--snyyyyta2212n------mxnynmx-a2y-a]n=.,---[]x=170,s=16,x=165,s=25x=2男2女男女s=2]22.548(B)分分分分]D.][正解]由題可知甲得分的中位數(shù)為分,乙得分的數(shù)據(jù)從小到大排列為:5.1.3數(shù)據(jù)的直觀表示)的.______·1年1月6(74.5%)(54.7%)(54.1%)(50.2%)、沉穩(wěn)、直率、幽默、活潑、莊重、灑脫]]n78n2222211]11].,.,.]:.]]23(3)10=0.3=.的)7)2])7846].2257852]22578525.1.4用樣本估計(jì)總體·.-212m-nyyyyt212n---,1n22n12n12p1-p)n2nnii1-61-x=.乙616s=-+-+-+-+-+-]=22222273,16s=-+-+-+-+-+-]=222222.又ss60],,62425507892222222222,.22和和-]xxxxs212x--yyyysa,212ys.2-則a=,----sx-asy-a]2222s=2xy]22=,..-]x=,223xx年9a],,.由.3.3.6,5,由,7組:,],.5×.,11122]1-x==故.5.3.1樣本空間與事件·(Ω表.1的5412]](C)]AcABC故D.]].,..4.6.3.4.3b的2e的32..A6B7<.;A6C4..]從,共4A(C)]5.3.2事件之間的關(guān)系與運(yùn)算BAB,或ABBAA與B.B且A與B)ABA與B或或.A與B)ABBA與B即.若BBABABA--123456123]CCCCDCDCD,123431323CDCD.3343ECCCCCCDDDD包1234561232CCCFCCCGCCC.456246135CDCD.1111D456DC224CC或DCCCDCCCCCCCCC+5624563123412345CCCCGCCC.6246135643312321313.D與B]1221=.51“”1A與B.A與B;A與B?B或?.II3987797]9877,P.B9.記FC7.B,B1213]1211-=.36A112=+=.62312AP-=.332.3412345616AB.]1點(diǎn)、23456CCC,123CCCCCCCCC.4561351231CCCCCC=.61234561111則CCCCCC=++=.66621351351111CCCCCC=++=.666212312311故=+.22]1或3B]1235AAA,123AAAAA.4123411112故AAAAAAAA=+++=.6666312341234____mna(A)9個(gè)]b,a,共3[分析]“有限性”和“等可能性”]33:,1.55.3.(D)]Ω,S,A5.55=..B6,635.nA.m=An3AAA和3BBB21231236221AB11]6Ω=A,A,AA),A,B,AB),AB),AA),AB),A,B,A,12131112132321222BABABABBBBBBB3313233121323AAAAAA121323313==.5AB,11ABABABABABABABAB91213212223313233ABABAB21112132=.94DA]從D,6AMC313==.62]D]從DD,AM,661==.25.3.4頻率與概率(D)[]21..32=.n2.≈n]n=n.]nn1n]5.3.5隨機(jī)事件的獨(dú)立性設(shè)BABA或或)B或)))----BA與B,A與,A與BAAAAAAAAA.12n12n12nCA與;C與.41]====K抽2121K==A與BACA與CBABB7158從81從4771]]記ABA--與A與B,A與,B與A.記C=.--記D=A(A)----BA與A與B,A與-B231616--B==ABP(AB.],--------∩B(A(B(A.B12=B=,111236]用CP)CP(A)1ABC(A(B(C).三列火車至少有一列正點(diǎn)到達(dá)的概率為P=1-(ABC)=1-2(A(B(C.“”“B;B;BAB;BAB+A.BAB+A+AB.)))0(AB)(A(B)23344324]ABAB231=×=.342Ai甲43i,則AAAA∪AAAAAAAA與AAAA1234123412341234AAAA1234A與Aij2AAAA=,31234故AAAA∪AAAA)12341234AAAP(A(AAAA)1234123423112333()×+()=.33BiDi4,則BBBB∪BBBB,12341234且BBBB與BBBB12341234BBBB1234B與Bij3B=,4i故BBBB∪BBBB)12341234BB(B(B(BB(B(B)12341234341431443()()+()=.2234A與BAB14AB14]A與BAB,1111==×=.444]在A與BAABAB]A和BAABBA·17896P==P==P=12122.]]11(A)3))12ac3bd14求d[解析]a0.1=,b==0.5,=-5--255,=1---=.知,1212女.3男男男男,1211121女男男男女女女3212223121323女女女,121323共33=.-x.名5865]名].5865=4]]]一二三四五六甲乙丙231312321..·→AB.→→→→→.a(chǎn)與b作.若D.]→→.a(chǎn)=b;→→→→.a(chǎn)與bb與ca與c的a與bb與ca與c;→→→→.→→→→]→→]→→→.→→→→→→→→→→→→→→→→→.O→→→→→→→→→→].→.→→→→→→→→=|==|==|=|.→→→點(diǎn)C=;M.→→.]→→.→]→→,→→→→=.→→→→.→→→→=,|=,→→.4中,O,→NNT.]→]有8→→→→→→→→→→→→→→→,T·2→→→→a與b=→.→→→,→→b.a(chǎn))·1EF:→→→→→→.a(chǎn)b則b=a+b,=a+bbc.]→→→→→.→→→→→→→→.c→→→→,→→,→→→.””“向→→→→.→.→→→→2.→→→→→□.→→→;→→→→→→→→;→→→→→→→→→→→→].→→→→→→→→→→→→→→→.,→→→→→→..;.→→→→→→→→→→→→].→→→→→→→→→→→→→.3如→→→→→→→→→→→→,即與.→→→=|.→→4H(C)→→→→→→→→→]以的→→→→→.6.1.3向量的減法.若b.xxb.→→→·→→→→→→→→→].→→→→→A→→→→Cb↓(B)].→→→0→→→→→→→→]→→→→→→→→→→→→→→→→→→→→→→→→;→→→.→→→].→→→→.→.3ba=b=.→→B,→→→→c.→→→→以與=((4故222→→→222→→→→→→→,→→→.O→→→e;→→→→→],→→→→→→.→→=|,→→→→.→→→→→.→→→→.→→→→.4b=b;b=a+b;=a-b=a+b.]bbba>.b]b]bbbbb>b|.bb6.1.4數(shù)乘向量·λa.當(dāng)0且0a=λa0aa;0aa.當(dāng)0或0.設(shè)μ;.λ·a≥a;a與a]當(dāng)1<a規(guī)律方法:12aax>.122.→→;]→→→[解析]因?yàn)椋璦=-a,(-2)=-a,-×AB=-2AB=2BA,b=-;81×.21812]-.123ba∶b]eaa=ba∶b,ba與ba∶b且a=ba∶bb→→→→.→→C與→→;13→→→→→→34→→→→C=,32→→5535→→→]]→→→→]C=2→6.1.5向量的線性運(yùn)算μ.μμμ1;by用b][解析]原式=a-a-b-a+)+a+b=(6-4++a+(1-+b=a.②2得,..λ、μ.;;25]).)c.254=---++b22453(-+--+b.1223→2設(shè)DE===→→λ121212→→ee1212→]=-→→1612121214→→→→=e-=e-=11→121412432343→212→→11→→→→b.→→,→→++=.→→--,1412→→→→→+-14→=.23→→.→→用b;F1212→→→]==,2313→→==,1212→→==,12→→→+.12→+,23132312→+=+,23→→=.→→又,F(xiàn).ee12→→→eeeeee,121212Deeeeee.121212→→→→→]eeeeeeee,12121212→→→→,DeeRee,1212eee,122eee,122434b-當(dāng)≠=43當(dāng)=b4設(shè)bb與b.]kkλ6.2.1向量基本定理2.→→C...,.b一b·若x,,∴∴,,.)1,,∴∴=.212aeeee和eek121212]ee與eeeeee,1212121212122設(shè)ee(C)121121221ee和eeee和ee122112121243eeα(A)12λλλeλeλλ012112212112212λλλeλeα內(nèi)1211221122122112αe與eB不1212112212即.eeyeeee,121212則.,]eeee解1212233→→→13→→,→13232313→→→→.→→→→→→→→→231323→→→→→→]++)+=+.→→→→,13→→→→3=·.43593→=+.→→→→→→→→→→22→→→]23→→→→12→→→]+a設(shè)AOAOADDCAD+AB+λ.223=AO=AD+AB=+.3336.2.2直線上向量的坐標(biāo)及其運(yùn)算lxa.eaaaa=e=x

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