山东省青岛市黄岛区高二数学上学期期末学业水平检测试卷(PDF)答案 山东省青岛市黄岛区高二数学上学期期末学业水平检测试卷(PDF) 山东省青岛市黄岛区高二数学上学期期末学业水平检测试卷(PDF)VIP免费

高二数学答案第1页共4页（数学是有生命的，题目是有经典的）2019-2020学年度第一学期期末学业水平检测高二数学参考答案一、单项选择题：本大题共8小题，每小题5分，共40分。1-8:CBCDCADA二、多项选择题：本大题共4小题，每小题5分，共20分。9.CD;10.AD;11.CD;12.ABD;三、填空题：本大题共4个小题，每小题5分，共20分。13.32；14.43；15.9759.0；16.3；四、解答题：共70分。解答应写出文字说明，证明过程或演算步骤。17.（10分）解：（1）由题知：10,120xy···································································2分所以1221niiiniixynxybxnx512060008808610500110············································4分所以200108120a，所以线性回归方程为：2008xy·······················5分所以估计该国年度国际足联排名为1时注册足球运动员的人数约为19220018y（万人）······································································6分（2）由题知：(10,0.1)XB········································································7分所以100.11EX···················································································8分101910(2)1(0)(1)10.9(0.9)(0.1)0.26PXPxPxC············10分注：若仅仅结果算错只扣一分！18.（12分）解：（1）因为{}na为等比数列，所以312321()64aaaa，所以214a···················2分又因为232112(21)(21)42aaaqq，所以12q···································4分所以112a，111()2nnnaaq·····································································5分（2）由题知：12lognnban······································································6分所以1()2nnnncabn··················································································7分所以23111112()3()......()2222nnTn···········································8分23411111111()2()3()......(1)()()222222nnnTnn········9分所以231111111()()......()()222222nnnTn··········································10分所以1111(1())1111122()1()()1(1)()122222212nnnnnnnTnn···········11分所以12(2)()2nnTn··············································································12分高二数学答案第2页共4页（数学是有生命的，题目是有经典的）19.（12分）解:（1）设(,)Mxy，由题知：1211,+22yykkxx··········································2分所以212211(1)(22)442244yyyxxykkxxxx································4分又因为yx42，所以214414...