当前位置:首页 >> 数学 >>

2017-2018学年(新课标)北师大版高中数学选修1-2《综合法》同步练习及解析

(新课标)2017-2018 学年北师大版高中数学选修 1-2 综合法 同步练习 【选择题】 1、已知函数 f ( x) ? lg A、 b B、 ? b 1? x , 若 f (a) ? b, 则 f (?a) 等于( ) 1? x 1 1 C、 D、 ? b b ) a(2 x ? 1) ? 2 2、已知函数 f ( x) ? 是奇函数,那么实数 a 的值等于( 2x ?1 A 、1 B、-1 C、0 ) C、4 D、?1 3、 tan 15? ? cot 15? 等于 ( A 、2 B、 2 ? 3 D、 4 3 3 4、综合法是( ) A、执果索因的逆推法 B、执因导果的顺推法 C、因果分别互推的两头凑法 D、原命题的证明方法 5、a>0,b>0,则下列不等式中不成立的是( ) A、 a ? b ? 1 ab ?2 2 1 1 B、 (a ? b)( ? ) ? 4 a b C、 D、 a2 ? b2 ab ? a?b 2ab ? ab a?b 【填空题】 6 、 若 0<a<1,0<b<1, 且 a ? b , 则 a+b, 2 ab , a 2 ? b 2 ,2ab 中 最 大 的 是 _____________. 7、若 a>0,b>0,且满足 ab ? 1 ? a ? b ,则 a+b 的最小值为_____________. 8、设 a ? 0, b ? 0, a 2 ? 【解答题】 9、若 a b ? ? 1(a, b, x, y ? 0且a ? b), 求证: x ? y ? ( a ? b ) 2 x y b2 ? 1, 则 a 1 ? b 2 的最大值为______________. 2 10、已知 a,b 是正数,且 a+b=1,求证: 1 1 ? ?4 a b 11、设 a>0,b>0,a+b=1,求证: 1 1 1 ?8 (1) ? ? a b ab 1 1 25 (2) (a ? ) 2 ? (b ? ) 2 ? a b 2 参考答案 1、B 2、A 6、a+b 7、 2 ? 2 2 8、 3、 C 4、B 5、 D 3 2 4 a b ? ? 1。 x y 9、? x, y, a, b ? 0, 且 a b ya xb ? x ? y ? ( x ? y )( ? ) ? a ? b ? ? ? a ? b ? 2 ab ? ( a ? b ) 2 x y x y ? 原不等式成立。 (本题还有其他解法) 10、? a, b ? R ? , 且 a+b=1, ? a ? b ? 2 ab ,? ab ? 1 2 1 1 a?b 1 ? ? ? ? ? 4. a b ab ab (本题还有其他解法) 11、. 证明: (1)? a ? 0, b ? 0, a ? b ? 1 ?1 ? a ? b ? 2 ab ? ab ? 1 1 ?4 ,? 2 ab 1 1 1 1 1 1 1 ? ? ? ? (a ? b)( ? ) ? ? 2 ab ? 2 ?4?8 a b ab a b ab ab ? 1 1 1 ? ? ?8 a b ab (2)? a?b a2 ? b2 ? 2 2 则: a2 ? b2 a?b 2 ?( ) 2 2 2 1 1 1 1 a? ?b? (a ? ? b ? ) 1 2 1 2 a b )2 ? a b ? (a ? ) ? (b ? ) ? 2( a b 2 2 (1 ? 2 ? 2 1 2 ) ab ? 25 2 1 1 25 ? (a ? ) 2 ? (b ? ) 2 ? . a b 2

以下是今天幸运会员获奖名单

mg7236.vip|www.vf5s.com|www712409com|25amhgcom|hg4772com|xilong121|www1388cn|kuaimao139|jinkun88|http..//22123456.com|hg55655com|wwwaikewnet

www.sb3317.com|uuuinv|yb7044com|yb2927com|ggg356.con|www.js8249.com|www.myppp|WWW.2019.CC|www.499533.com|www.jcsrp.com|www.68811.com|www.seseou.com|wwwwwwxiangxiang8com|www12655com|www.y68tt.com|hg66617.com|www.yh11169.com|b1348|www.690666.com|www.naixiu69.come|www.xl1253.com|yinhe9859.com|hg3659com|www.220ee.com|18dydy|www.47743.com|不卡的av12|95617g.com|momodiao. com|kb1913com|www888mkcom|www.1707aa.com|jsc006.com|www.46366.com|xiaoniu123|www.003007.com|627877807@qq.com|ww789.ink|cp958.com|ks068.com|leilan|ks080.com|zhanguosheng|7777ym换成什么了|vns155.co|www.77199.com|llp55566|www.377444.com|8000157.com|eksj5557|wwwsp747.com.|yb2023com|2544q9com|55218|52xbbtop|www.44077.com|www.22222.co|zxxin8832|77730.com|xm0072|www.r6666.com|www.59404433.com|wwwch633com|www.1313ee.com|2042huc118com|www2023wnscom|68868|cp1931com|wwwbet983com|busixiaochen|80.cn|wwwha99888com|3048989|wwwk32789com|WWW.77456.COM|9907.com|ok6608.com|wwwtyc97com|3814com|a576588316|www.26uuuyy.com|cdca0299|www.808ee.com|171740187@qq.com|www.82365a.com|www.19810504tl.com|www.8455c.com|tl5521|rd.zjkqx.gov.cn|hcyuq888|3167com|kf8899.com|21818.com|kuikui18|c4567890by|日本黄色av www.r0932|bet365563488.com|9991199.com|www.26365z.com|mg2204.vip|66168.com|www.43200.com|wwwcpcp32com|2481410083@qq.com|www.hg6300.com|694077.com|www.99999cf.com|guyuanting|wwwsd1118com|tools88.com|www、fj001、ⅩyZ/?tg=270719|fafa700|1107302783@qq.com|hu5151|46668com|k0803|www.jsqedu.com|www.b6616.com|www.5501909.com|www.003802.com|www989567com|m.ks6632.com|vns6490com|68696ccom|r79159|5360n|www.xpj7666.com|aaa6a. com|herui0413|ww-76588.com|yinsi|900777.com|wwwagxed1113com|www.99880.com|5z0000com|s59k. com|www.994996.com|www.22666.cr|WWW.MS1177.COM|wwwbm5068com|www.003805.com|www.66tutu.com|22334747com|www.17727cc.com|mliu|www.901234.com|www.xj4567.com|392awck.com|www.9077988.com|www.1122075.com|56563kcom|www.26123t.com|www282898com|www.www33.info|www.qyh5577.com|www.gdsdxy.edu.cn|55yeye.com|www.31809.com|2773582587@qq.com|www.ks6835.com||8886800.com|mimihh.com|bozbala.com|zhouyunjie888@163.com|1725511214@qq.com|2win22win.com|vns6937com|

8h168.com|WWW.9920U.com|www.yl42.com|rochjane.com|kj458.com|WWW.G0711.COM|www.extreme-vids.net|9810com|wwwjjj258com|11sblive.com|j88gg|159753q|zy0528|hg4004.com|wwwss462com|200394com|www.gx1178.com|www.46467.com|www.urlshare.cn|www.038666.com|www.138533333.com|740sun.com|jj0066.com|wwwy7678com|www.991515.com|www.2855.com|451234.com|www11555|yaoss1974|www5honglicom|aotuxo.xyz|wwwbm6902com|261917a|agjm602com|www.e6bet.com|swy951|cclzz3709|14718684|xb456.com|a610689404|wuyi1127|www.kokose.com|nvh.ieennn.com|www.2277733.com|www.byhbsb.cn|www.5555yl.cc|www7777113com|WWW.CEO2000.NET|624955.com|han666|www.01ssss.com|long0906com|468888..com|wwwtjy188com|tt538.net|66612a.com|820zhcom|by6694.C0m||7569c.com|www.ppav7070.com|WWWYB2999COM|www.9c2233.com|www935eecom|642l.com|wwwhg7888cc|www1232233com|yabet4489com|cgz2013|www.cao22.com|www240234com|www.3345df.cpm|www.qq188aa.com|www.13660a.com|9uu官网改成什么了|xiaochaojun|117799.com|www022222com|wwwra466com|1er.com|www324987com|kb9152com|manman99|WWW.SE.COM|lijun1314|www.xbet681.com|www.256yu.com|www.yh88773.com|wwwxpj687cc|9099.com|blr3311|yiuy158|www.083425.com|kltszlj|ssnh64|www.hy66988..com|www.bbin25.com|hg889922.com|wwwh31365com|995799com|cxing282478|www4483com|www.x92x.com|852473com|yb9498com|www.4008267267.com|900689|05fff.com|kckc664.com|www.888w.com|682222..com|WWW.SS33.COM|www.4141k.com|wwwjav.con|20078.com|WWW.3123.COM|s203com|www.626757.com|www.etet66.com|aglaoge4com|www.xx838.com|www.s8s213.me|16777com|www.sjcp899.com|www.en8811.com|dc22222.com|WWW.LH3366.COM|WWW.NS3344.COM|www.31665.com|wwww24jcom/cn|jjj5025com|1248.vip|rrr521最新网站|www.48dv.com|bdg1188.com|www.minhangshi.com|www.mk3388.com|www.615876.com|bbs.hupu.com|www.funedu.org|5360c|4331.win|ambjlcom|www.666604.com|hkt8|www.5666550.com|www.avtt10086.com|gg6163|www8281353com|www.sss6789.com|kyy723333|wwwhg4873com|www3456789net|www.a25v.con|ks6021com|www.zucai310.com|ldcp14com|2484466.com|w9627.com|www.2bopan.com|www.789fff.com|ag3613cn|lixiaojie123|www.sd339.com|www.815007.com|www.cg379.com|www.uanya8.com|1243217690@qq.com|www13550009com|www.999188.com|

182TVTV|www.590078.com|dxafvc|www8383suncom|753ks.net|tuiche10.com|15856wcom|linux网卡配置有变进不了系|www617777com|www.eee50.com|www.vip70358.com|ks3379com|www.yf0000.com|www.hg5365.com|www.vip888.zzxx2.com|www8588pjcom|www.ma2666.com|wwwvnskey9com|www6453com|sfsgdss|www7077033com|4694com|www.080069.com|6ccccc|zztaxi.cn:9890|www201588com|nn3344|fl0777com|www091msccom|www4240com|www362suncitycom|www.yh56999.com|www.848777k.com|wwwzuqiu18com|www.154888.com|www5xinhaocom|4849.com|www.2245b.com|WWW.BWIN1188.COM|www.349e.com|www.097722.com|ag0813vip|www.youle507.com|337708com|wwwkxcp85com|yabovip1392com|www.109694.com|wwwboma11com|cqby5.com|wei7040|wwwahweixinnet|WWW.HONGZUWANG.COM|www.naixiu304.com|www.t5229.com|36547.com|wwwbmw9802com|zsc7788|www.pj30688.com|国产视频91 www.gxbol.com|www.9993976.com|www.dfh6688.com|555502.com|gao369|www.819mk|ag0322vip|junqi1979|hg083.com|hj5226|www44677qcom|www.111tuku.com|94311.com|www13438com|7244381|985ksnet|www.2257.com|anybet.xyz|baizhan123|www.821234.com|wwwhg99255com|wwwrr3333com|hm4.vip|wwwjs555858com|www.xpj1875.com|www.pu620.com/|wwwv3252com|www.1851116.com|www68vvvcom|58677.cc|www.r0000.com|142434.com|www.22xixi.com|wwwxpj8668com|www.lqz77.com|www.k7726.com|shaanxi.uc55.com|sb011|635176893@qq.com|69ag88.com|www.132yh.com|ag4560vip|www.735563.com|www.34545d.com|wwwssc445com|点点娱乐ddtv34|www037982com|eeussbx.com|234549com|988778.com|ag0274com|6403y.com|hpf4499|www83828com|.wwwyfcp70com|www.604660273.com|www.ang6.com|www.5159.com|44tvtv在线播放|vip1113|www.911bb.com|wwwdf33311com|www888secom|999488.COM|www0622jscom|ytshak@sina.com|www.win6688.net|www.60128.com|www.948725.com|wwwpj52233com|9999|www 78 91bb com|www.bm4484.com|huyf89|www.661667.com|www88811dcom|www97g3com|www7770309com|www92419com|475726818@qq.com|www.67205655.com|xinbofxb.cn|www2588vnscom|www.88jt0002.com|83116ggg.com|wrm55com|www.k3.com|hk3188.com|www.JJ712.COM|www.sexinsex.net|kxj1102|556784.com|www.118btt.com|liou658|lincong|hufeng777|www.b4331.com|skymimi更新地址|csu195879|www.x77151.com|ag6972vip|zlb666|raooo.com|lyg777|www.575110.com|www.yy1665.com|js11009com|mirtoymirtoy|www.5188i.com|www.ks6615.com|

wwww166.cc.a|wwwbygj44com|222ooo.com|www.8029.com|hsjd9999com|zd556677|wwwj793com|358aaaaa.cc|WWW.99999.COM|360msc.com|8802ks.com|dfg087|98360.com|www.hk078.com|caitou08.com|www.haoxx14.com|win22w22play|2233.hk|8249vip|www.xndsw.com.cn|hhh407.com|app.7724.com|883319.com|www.hg2310.com|900683|wwwv345tv|vns9484com|www.qqdn.com|supeoo|www.1739v|www.bm305.com|3668.win|c1234bsudhd|3868-1020|www aipapa 8com|1538.bet|qq1234|dd521|yabet3457com|805232com|vns679.com|www.736902.com|www72678com|WWW.79885.COM|989av.com|chen527300|1094885451@qq.com|www.yh4998.com|yqsl|6699uc.com|lijinhong|www.568777.com|www.280016.com|www.lovingnaturals.com|www375888com|wwwjs8251com|www310444com|www.852688.com|www.6141888.com|www.74739.com|www.3380w.com|www.hg5321.com|dzj5558.com|345178.com|www.ccc|www.suncity798.com|489239.com|www.2566003.com|www.6641.com|www.663366.com|www.win377.com|www370063com|hk1000|kuaimao apk|8141.bet|www.lll993.com|24maoaa.com|帐号|www.3155588.com|ccoc|www6487aacom|zhou12|7395270666|www.bmw827.com|18687286588|kb2501com|ag4894.win|https:/www.8833bygj.com|www.tdh88.com|5122vip|yuyaya7912|bet3211com|www.4445.com|qy5863vip|222ee最新网站黄网|www.1364C|340dcom|www.h6005.com|618564.com|xpj2534com|wwwavtbccom|www.8861988.com|www.8058.com|zhangkai0616|1wan8.com|5999com|www.ccb.com.cn|30009e.com|m.tiaoflm.com|wwwtyc456com|www988300com|400357.com|ako888. com|www.looklookb .com|www.k819.net|951692|813311com|www.558321.com|www.jinsha12.com|hg4335.com|hd1397.com|www.ruru42.com|peter98|hg3424com|www.xy4449.com|www.248247.com|cydx90106|311789.com|abxx6.com|www.lll83.com|www.1122uj.cim|yht123|www.2016559.com|wb6111com|898716com|www.5588tk.com|yabet1030com|www.ylzz5555.com|www.4776.com|22scg.net|WWW.XJS88.COM|www39077kcom|www.0099avtt.com|cp9415com|www3636081com|jklk1233011|HTTP:488SECOM|www.872006.com|9992614.com|wwwxpj29388com|ag82800.com|xxk109|www835352com|ee0077.com|hechuanlife@163.com|ml277com|19880505|ag7855vip|agks5664com|www.33eee.com|WWW.YC56789.COM|065666.com|WWW.JSYLC0177X.COM|www.11pj8.vip|www.877784.com|mg1374.vip|xiaoyong|帐号|

以上会员名单排名不分前后