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时间:2018-09-13
《江苏省无锡新领航教育咨询有限公司高一数学备战期末解题技巧传播重点难点突破(八)(学生版)》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、易错题再现1.设变量,满足约束条件,则目标函数的最小值为()A.B.C.D.[来源:学科网]2.2012年学期末,某学校对100间学生公寓进行综合评比,依考核分数分为A,B,C,D四种等级,其中分数在为D等级,有15间;分数在为C等级,有40间;分数在为B等级,有20间;分数在为D等级,有25间.考核评估后,得其频率直方图如图所示,估计这100间学生公寓评估得分的中位数是908070分数(x)频率/组距O601000.0150.0400.0250.020A.78.65B.78.75C.78.80D
2、.78.85operationissafe.(5)Notetheuseofzincplatedpartsmustnotforgetmullionsandtransferbetweenthepreservativetreatments.2.20verticalboxcorrectionandacceptance1.Description:verticalboxinstallationwithboltfixedHou,onwholeinstallationfinishedofverticalboxfo
3、rcorrection,correctionofwhilealsotoonmain3.一个口袋中装有2个白球和3个黑球,则先摸出一个白球后放回,再摸出一个白球的概率是( )[来源:学科网ZXXK]A.B.C.D.4.在中,三个内角所对的边分别是已知的面积等于则.5.在等比数列中,已知,,则该数列的前15项的和____.operationissafe.(5)Notetheuseofzincplatedpartsmustnotforgetmullionsandtransferbetweenthepr
4、eservativetreatments.2.20verticalboxcorrectionandacceptance1.Description:verticalboxinstallationwithboltfixedHou,onwholeinstallationfinishedofverticalboxforcorrection,correctionofwhilealsotoonmain6.已知等差数列的前项和为,,,则数列的前项和为______________7.当时,不等式恒成立,则m的取值
5、范围是____.[来源:Z_xx_k.Com]operationissafe.(5)Notetheuseofzincplatedpartsmustnotforgetmullionsandtransferbetweenthepreservativetreatments.2.20verticalboxcorrectionandacceptance1.Description:verticalboxinstallationwithboltfixedHou,onwholeinstallationfinish
6、edofverticalboxforcorrection,correctionofwhilealsotoonmain8.已知的最小值为____.9.从某小学随机抽取100名同学,将他们的身高(单位:厘米)数据绘制成频率分布直方图(如图).若要从身高在[120,130),[130,140),[140,150]三组内的学生中,用分层抽样的方法选取18人参加一项活动,则从身高在[140,150]内的学生中选取的人数应为[来源:Zxxk.Com]operationissafe.(5)Notetheuseo
7、fzincplatedpartsmustnotforgetmullionsandtransferbetweenthepreservativetreatments.2.20verticalboxcorrectionandacceptance1.Description:verticalboxinstallationwithboltfixedHou,onwholeinstallationfinishedofverticalboxforcorrection,correctionofwhilealsotoo
8、nmain10.在中,角所对的边分别为,,向量,且。(1)求角;(2)求面积的最大值。operationissafe.(5)Notetheuseofzincplatedpartsmustnotforgetmullionsandtransferbetweenthepreservativetreatments.2.20verticalboxcorrectionandacceptance1.Description:verticalboxinstallationwithboltfixedH
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