1 . 在下列选项中,能正确表示集合
和
的关系的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1353e28efb2a55af5e095913aba9f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829feb22ea47a98c7773b1907f00b1c4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
,
,
,则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f1205a3d4a24810d0fe9c913583a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76e9af6e45d843d4e5f8c8d564105d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5245385fe5ec570e6fcfcdfb9e922a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知实数
满足:
,则下列不等式中可能成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc2d2b344f9cf9bb1b8704ca1066011.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
4 . 已知函数
为偶函数,若函数
的零点个数为奇数个,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92146c133ba2bdbda499f5af2bdda022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6aeed19e3b51453904fe44d5f4c247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92682840e2a230de346562b2032f8adb.png)
A.1 | B.2 | C.3 | D.0 |
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5 . 某科创公司新开发了一种溶液产品,但这种产品含有
的杂质,按市场要求杂质含量不得超过
,现要进行过滤,已知每过滤一次杂质含量减少
,要使产品达到市场要求,对该溶液过滤的最少次数为______ .
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f762a1de162d8dca6dcd06a3107c3fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe619bd93756ad8656ba0d02c4fddca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef98775e12ea3852135792e34526a519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295fbcedb830aa9acb83aef417f07202.png)
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6 . Gompertz曲线用于预测生长曲线的回归预测,常见的应用有:代谢预测,肿瘤生长预测,有限区域内生物种群数量预测,工业产品的市场预测等,其公式为:
(其中
,
为参数).某研究员打算利用该函数模型预测公司新产品未来的销售量增长情况,发现
.若
表示该新产品今年的年产量,估计明年
的产量将是今年的
倍,那么
的值为(
为自然数对数的底数)( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aff30671a6b9e06d72228460819f877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8ed1718781504ad5647f33642b191c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3771a38cf379d60c8d51687db3d035c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 直线
与函数
分别交于
两点,且
,则函数
的解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5bb184b318d5c0077e6c2b33f8d5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368fc197b61e01fe6a4a168bb7b375cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 若函数
为偶函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddc2c2ca79967bfd44d54a488712508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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9 . 函数
的一个单调递减区间为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384559fa2c1314034c224b0d8f38f353.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知全集
,集合
,集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0138bfb7407fc0af212dc439d705cfb3.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f712c090c0ee3236ec7e9ddba42e960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea88acab872f6ba76c8c092e114b63f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73bdbc9e0aa626fff7241e707e67575c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0138bfb7407fc0af212dc439d705cfb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
您最近一年使用:0次