高一数学上学期期中考试卷答案 山东省青岛市黄岛区高一数学上学期期中考试卷(PDF)VIP专享VIP免费

高一数学答案第 1 页 共 4 页（数学是有生命的，题目是有经典的）2019-2020 学年度第一学期期中学业水平检测高一数学参考答案一、单项选择题：本大题共 10 小题，每小题 4 分，共 40 分。1  10：D B B C AD C A C D二、多项选择题：本大题共 3 小题，每小题 4 分，共 12 分。11．ACD；13．CD；三、填空题：本大题共 4 个小题，每小题 4 分，共 16 分。14．(1,2) ；15． 2 ；16．6 ；17．32164；四、解答题：共 82 分。解答应写出文字说明，证明过程或演算步骤。18．（12 分）解：（1）由02131x  得1x  ，所以{ |1}Ax x······················1 分由 1242x即12222x 得 12x ，所以{ | 12}Bxx ····················3 分所以{ | 11}ABxx ···········································································5 分(){ |1}RC Ax x······················································································· 6 分(){ |1}RC ABx x ··············································································· 7 分（2）因为CB，且0a 所以 22a ，1a ·····················································································10 分故所求 a 的取值范围为：01a ··································································12 分19．（14 分）解：（1）因为当0x时，21)(xxxf所以217(2)224f················································································· 2 分又因为)(xf为奇函数，所以47)2()2(ff················...