河南省2013年高考适应*考试数学（文）试题及*
类型：
大小：241 KB
页数：7页
ID：63637a1c8ca8c
第1页 / 共7页
第2页 / 共7页
第3页 / 共7页
河南省普通高中2013年新课程高考适应*考试（一）数学（文）试题本试题卷分第1卷（选择题）和第Ⅱ卷（必考题和选考题两部分）。考生作答时，将*答在答题卡上（答题注意事项见答题卡），在本试题卷上答题无效。考试结束后，将本试题卷和答题卡一并交回。第Ⅰ卷一、选择题：本大题共12小题，每小题5分，在每小题给出的四个选项中，只有一项是符合题目要求的。1．已知全集U=R，*A={1，2，3，4，5}，B={false}，下图中*影部分所表示的*为A．{0，1，2}B．{1，2}C．{1}C．{0，1}2．复数false，在复平面上对应的点位于A．第一象限B．第二象限C．第二象限D．第四象限3．在用二分法求方程false的一个近似解时，已将一根锁定在区间（1，2）内，则下一步可断定该根所在的区间为A．（1，4，2）B．（1，1，4）C．（1，false）D．false4．已知命题false使得false命题false，下列命题为真的是A．pfalseqB．（falseC．falsefalseD．false5．某三棱锥的侧视图和俯视图如图所示，则该三棱锥的体积为A．falseB．falseC．falseD．false6．设函数false是A．最小正周期为false的奇函数B．最小正周期为false的偶函数C．最小正周期为false的奇函数D．最小正周期为false的偶函数7．如图是计算函数false的值的程序框图，在①、②、③处分别应填入的是A．y=ln（一x），y=0，y=2B．y=0，y=2，y=In（一x）C．y=ln（一x），y=2z，y=0D．y=0，y=ln（一x），y=28．如果数列false是首项为1，公比为false的等比数列，则false等于.A．falseB．—32C．falseD．329．在同一坐标系中画出函数false的图象，可能正确的是10．已知a，b是平面内两个互相垂直的单位向量，若向量c满足（ac）·（b一c）=0，则|c|的最大值是A．1B．falseC．2D．false11．已知A，B，C，D是同一球面上的四个点，其中△ABC是正三角形，AD⊥平面ABC，AD=2AB=6则该球的表面积为A．16falseB．24falseC．32falsefalseD．48false12．过双曲线false的右顶点A作斜率为一1的直线，该直线与双曲线的两条渐近线的交点分别为B，C，若A，B，C三点的横坐标成等比数列，则双曲线的离心率为A．falseB．falseC．falseD．false第Ⅱ卷本卷包括必考题和选考题两部分，第13题～第2l题为必考题，每个试题考生都必须做答。第22～24题为选考题，考生根据要求做答。二、填空题：本大题共4小题，每小题5分。http://..13．已知函数false的最大值是。14．已知函数false上的奇函数，且false的图象关于直线x=1对称，当false时，false．15．已知圆false过坐标原点，则圆心C到直线false距离的最小值等于．16．已知函数false处取得极值，若false的最小值是。三、解答题：解答应写出文字说明，*过程或演算步骤。17．（本小题满分12分）在△ABC中，角A，B，C所对的边分别为a，b，c，已知false（I）求*：a，c，b成等差数列；（Ⅱ）若ab=4，△ABC的最大内角为120°，求△ABC的面积．18．（本小题满分12分）如图所示，在正三棱柱ABCA111中。AB=AA1，D是BC上的一点，且AD⊥C1D．（I）求*：A1B∥平面AC1D；（Ⅱ）在棱CC1上是否存在一点P，使直线PB1⊥平面AC1D?若存在，找出这个点，并加以*；若不存在，请说明理由．19．（本小题满分12分）某种商品在50个不同地区的零售价格全部介于13元与18元之间，将各地价格按如下方式分成五组：第一组[13，14）；第二组[14，15），……，第五组[17，18]。右图是按上述分组方法得到的频率分布直方图．（I）求价格在[16，17）内的地区数，并估计该商品价格的中位数（精确到0．1）；（Ⅱ）设m、n表示某两个地区的零售价格，且已知false，求事件“|mn|>l”的概率．20．（本小题满分12分）已知椭圆C的方程为false左、右焦点分别为F1、F2，焦距为4，点M是椭圆C上一点，满足false（Ⅰ）求椭圆C的方程；（Ⅱ）过点P（0，2）分别作直线PA，PB交椭圆C于A，B两点，设直线PA，PB的斜率分别为k12，false，求*：直线AB过定点，并求出直线AB的斜率k的取值范围。21．（本小题满分12分）已知函数false（1）若函数false和函数false在区间false上均为增函数，求实数a的取值范围；（2）若方程false有唯一解，求实数m的值。新课标第一网请考生在第22、23、24三题中任选一题做答，如果多做．则按所做的第一题记分．做答时请写清题号。22．（本小题满分10分）选修4一1：几何*选讲在falseABC的边AB，BC，CA上分别取D，E，F．使得DE=BE，FE=CE，又点是△ADF的外心。（Ⅰ）*：D，E，F，四点共圆；（Ⅱ）*：在∠DEF的平分线上．23．（本小题满分10分）选修4～4：坐标系与参数方程在直角坐标系xOy中，直线l的参数方程为false（t为参数）在极坐标系（与直角坐标系Oy取相同的长度单位。且以原点O为极点，以轴正半轴为极轴）中，圆C的方程为false（I）求圆C的直角坐标方程；（Ⅱ）设圆C与直线l交于点A，B．若点P的坐标为（1,2）,求false的最小值．24．（本小题满分10分）选修4—5：不等式选讲设函数false=false（I）求函数false的最小值m；（II）若不等式false恒成立，求实数a的取值范围．参考*一、选择题（每小题分，共60分）题号12346789101112*DAADDDD二、填空题（每小题分，共20分）（13）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.001.png"\*MERGEFORMATINET （14）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.002.png"\*MERGEFORMATINET （15）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.003.png"\*MERGEFORMATINET （16）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.004.png"\*MERGEFORMATINET三、解答题（17）解：（Ⅰ）由正弦定理已知等式可化为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.005.png"\*MERGEFORMATINET，所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.006.png"\*MERGEFORMATINET， 3分.所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.007.png"\*MERGEFORMATINET，所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.008.png"\*MERGEFORMATINET.由正弦定理得，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.009.png"\*MERGEFORMATINET，所以a，c，b成等差数列. ………6分（Ⅱ）由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.010.png"\*MERGEFORMATINET 得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.011.png"\*MERGEFORMATINET 且a为最大边,由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.012.png"\*MERGEFORMATINET，得：INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.013.png"\*MERGEFORMATINET，从而INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.014.png"\*MERGEFORMATINET, …10分所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.015.png"\*MERGEFORMATINET. 12分（18）（Ⅰ）*：因为ABC－A111是正三棱柱，所以CC1⊥平面ABC，所以CC1⊥AD．又AD⊥1D，CC1∩1D＝1，所以AD⊥平面BCC11，所以AD⊥BC，所以D是BC的中点． 3分如图，连接A1，设与AC1相交于点E，则点E为A1的中点．连接DE，则在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.017.png"\*MERGEFORMATINET中，因为D、E分别是BC、A1的中点，所以A1∥DE，又DE在平面AC1D内，A1不在平面AC1D内，所以A1∥平面AC1D． ……6分（Ⅱ）解：存在这样的点P，且点P为CC1的中点． …7分下面*：由（Ⅰ）知AD⊥平面BCC11，故1P⊥AD．设PB1与1D相交于点Q，由于△DC1≌△PB11，故∠QB11＝∠CC1D，因为∠QC11＝∠CDC1，从而△QC11∽△CDC1，所以∠1QB1＝∠DCC1＝90°，所以1P⊥1D．因为AD∩1D＝D，所以1P⊥平面AC1D．…12分（19）解：（Ⅰ）价格在[16,17﹚内的频数为1－(0.06+0.08+0.16+0.38)=0.32， 所以价格在[16,17﹚内的地区数为50×0.32＝16，…2分设价格中位数为，由0.06+0.16+（）×0.38=0.5，解得：=15≈15.7（元） 分 （Ⅱ）由直方图知，价格在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.019.png"\*MERGEFORMATINET的地区数为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.020.png"\*MERGEFORMATINET，记为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.021.png"\*MERGEFORMATINET、INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.022.png"\*MERGEFORMATINET、INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.023.png"\*MERGEFORMATINET；价格在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.024.png"\*MERGEFORMATINET的地区数为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.025.png"\*MERGEFORMATINET，记为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.026.png"\*MERGEFORMATINET若INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.027.png"\*MERGEFORMATINET时，有INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.028.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.029.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.030.png"\*MERGEFORMATINET3种情况；若INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.031.png"\*MERGEFORMATINET时，有INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.032.png"\*MERGEFORMATINET6种情况；若INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.033.png"\*MERGEFORMATINET分别在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.034.png"\*MERGEFORMATINET和INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.035.png"\*MERGEFORMATINET内时， ADxAxBxCxDyyAyByCyDzzAzBzCzD共有12种情况. 10分所以基本事件总数为21种，事件“INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.036.png"\*MERGEFORMATINET”所包含的基本事件个数有12种.新课标第一网INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.037.png"\*MERGEFORMATINET …12分（20）解：（Ⅰ）在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.038.png"\*MERGEFORMATINET中,设INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.039.png"\*MERGEFORMATINET,INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.040.png"\*MERGEFORMATINET,由余弦定理得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.041.png"\*MERGEFORMATINET，即INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.042.png"\*MERGEFORMATINET，即INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.043.png"\*MERGEFORMATINET，得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.044.png"\*MERGEFORMATINET. …2分又因为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.045.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.046.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.047.png"\*MERGEFORMATINET，又INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.048.png"\*MERGEFORMATINET所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.049.png"\*MERGEFORMATINET，所以所求椭圆的方程为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.050.png"\*MERGEFORMATINET. ……6分（Ⅱ）显然直线INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.051.png"\*MERGEFORMATINET的斜率INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.052.png"\*MERGEFORMATINET存在，设直线方程为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.053.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.054.png"\*MERGEFORMATINET，由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.055.png"\*MERGEFORMATINET得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.056.png"\*MERGEFORMATINET，即INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.057.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.058.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.059.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.060.png"\*MERGEFORMATINET， …8分由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.061.png"\*MERGEFORMATINET得，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.062.png"\*MERGEFORMATINET，又INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.063.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.064.png"\*MERGEFORMATINET，则INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.065.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.066.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.067.png"\*MERGEFORMATINET， …10分那么INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.068.png"\*MERGEFORMATINET，则直线直线INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.069.png"\*MERGEFORMATINET过定点INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.070.png"\*MERGEFORMATINET. ……12分（21）解：（Ⅰ）因为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.071.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.072.png"\*MERGEFORMATINET，故当INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.073.png"\*MERGEFORMATINET时，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.074.png"\*MERGEFORMATINET，当INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.075.png"\*MERGEFORMATINET时，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.076.png"\*MERGEFORMATINET，要使INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.077.png"\*MERGEFORMATINET在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.078.png"\*MERGEFORMATINET上递增，必须INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.079.png"\*MERGEFORMATINET，因为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.080.png"\*MERGEFORMATINET，要使INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.081.png"\*MERGEFORMATINET在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.082.png"\*MERGEFORMATINET上递增，必须INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.083.png"\*MERGEFORMATINET，即INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.084.png"\*MERGEFORMATINET，由上得出，当INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.085.png"\*MERGEFORMATINET时INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.086.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.087.png"\*MERGEFORMATINET在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.088.png"\*MERGEFORMATINET上均为增函数.……6分（Ⅱ）方程INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.089.png"\*MERGEFORMATINET有唯一解INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.090.png"\*MERGEFORMATINET有唯一解，设INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.091.png"\*MERGEFORMATINET，所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.092.png"\*MERGEFORMATINET（INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.093.png"\*MERGEFORMATINET）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.094.png"\*MERGEFORMATINET随INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.095.png"\*MERGEFORMATINET变化如下表：.INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.096.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.097.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.098.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.099.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.100.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.101.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.102.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.103.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.104.png"\*MERGEFORMATINET递减极小值INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.105.png"\*MERGEFORMATINET递增由于在INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.106.png"\*MERGEFORMATINET上，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.107.png"\*MERGEFORMATINET只有一个极小值，所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.108.png"\*MERGEFORMATINET的最小值为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.109.png"\*MERGEFORMATINET，故当INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.110.png"\*MERGEFORMATINET时，方程INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.111.png"\*MERGEFORMATINET有唯一解．…………12分 （22）*：（Ⅰ）如图，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.112.png"\*MERGEFORMATINET =180°2∠A．因此∠A是锐角，从而INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.113.png"\*MERGEFORMATINET的外心与顶点A在DF的同侧，∠DOF=2∠A=180°∠DEF．因此D，E，F，四点共圆． ………6分（Ⅱ）由（Ⅰ）知，∠DEO=∠DFO=∠FDO=∠FEO，即在∠DEF平分线上． …10分（23）解:（Ⅰ）由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.114.png"\*MERGEFORMATINET得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.115.png"\*MERGEFORMATINET，化为直角坐标方程为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.116.png"\*MERGEFORMATINET，即INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.117.png"\*MERGEFORMATINET. ……………4分（Ⅱ）将INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.118.png"\*MERGEFORMATINET的参数方程代入圆的直角坐标方程，得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.119.png"\*MERGEFORMATINET由INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.120.png"\*MERGEFORMATINET，故可设INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.121.png"\*MERGEFORMATINET是上述方程的两根，所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.122.png"\*MERGEFORMATINET，又直线INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.123.png"\*MERGEFORMATINET过点INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.124.png"\*MERGEFORMATINET，故结合t的几何意义得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.125.png"\*MERGEFORMATINET=INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.126.png"\*MERGEFORMATINETINCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.127.png"\*MERGEFORMATINET所以INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.128.png"\*MERGEFORMATINET的最小值为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.129.png"\*MERGEFORMATINET ……………10分（24）解：（Ⅰ）INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.130.png"\*MERGEFORMATINET..显然，函数INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.131.png"\*MERGEFORMATINET在区间INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.132.png"\*MERGEFORMATINET上单调递减，在区间INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.133.png"\*MERGEFORMATINET上单调递增，所以函数INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.134.png"\*MERGEFORMATINET的最小值INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.135.png"\*MERGEFORMATINET ……………5分（Ⅱ）由（Ⅰ）知INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.136.png"\*MERGEFORMATINET，INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.137.png"\*MERGEFORMATINET恒成立，由于INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.138.png"\*MERGEFORMATINET，等号当且仅当INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.139.png"\*MERGEFORMATINET时成立，故INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.140.png"\*MERGEFORMATINET，解之得INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.141.png"\*MERGEFORMATINET或INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.142.png"\*MERGEFORMATINET所以实数INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.143.png"\*MERGEFORMATINET的取值范围为INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.144.png"\*MERGEFORMATINET或INCLUDEPICTURE"http://.hnjys./upload/2013/3/word_huyu.145.png"\*MERGEFORMATINET ……………10分HYPERLINK"http://.."..
免费预览已结束，剩余 4 页可下载查看
点击下载本文档本文档为docx格式
下载文档