20-21高一上·全国·课后作业
1 . 已知命题
为假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82568438172a87ba2aedc31f1eb9c24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2016高二·全国·课后作业
2 . 已知命题
命题
,若命题“
”是真命题,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954308096/STEM/7ea66f8a95e149a3a06aceefb2a5d2f8.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954308096/STEM/5d1b5da1b8ab418ca613da984c353984.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954308096/STEM/6fe322c104c34a188fe4f84771b65f29.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826273953955840/1826273954308096/STEM/ff047b3263e84ddeb59a646db0e5d24b.png)
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3 . 已知“
,使等式
成立”是真命题.
(1)求实数
的取值集合
;
(2)设不等式
解集为
,若
是
的必要条件,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/1bc4346ebb9e42109b9d946488bc33a9.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/2f86cb48fb234ca6a429cafe09190b6a.png)
(1)求实数
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/8f4a954038654019a2d7a63d6d51a828.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/09f8192b58c242768ca36b47d2d1a08d.png)
(2)设不等式
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/07a4453b67704d088ffeca6def62e687.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/695305b97bd04e80b8f2d126cc1400b6.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/f75e5a39d116453dae0398817d7cf96b.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/39f5a18d400e447bb8dd608d6ebc04ad.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448671006720/1572448677314560/STEM/4a9b0fb5b25446b7ba16b11194fb35e7.png)
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2016高二·全国·课后作业
4 . 已知命题
命题
,若命题“
”是真命题,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826274274197504/1826274274549760/STEM/e157e7de0d214beb8f3694eaea702b84.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826274274197504/1826274274549760/STEM/a13bd399f94e404b9badd305ae71db7e.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826274274197504/1826274274549760/STEM/f6d4fb0e383c44ac9cb44f11de60c720.png)
![](https://img.xkw.com/dksih/QBM/2016/10/18/1826274274197504/1826274274549760/STEM/5015526b1a534179bcea323094a6e413.png)
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20-21高一·全国·课后作业
5 . 若“
1≤x≤2,x2-m≥0”为真命题,求实数m的取值范围.求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c3726fe0b0698826dc623f269e179.png)
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名校
6 . 已知命题:“
,使等式
成立”是真命题.
(1)求实数
的取值集合
;
(2)设不等式
的解集为
,若
是
的必要条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4ea13e43d05596446bcbf52a53031d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14c27da343aac13ea6dc870863b0bac.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c9379cd1f92f83da21bee1bdc3c676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca06304795e9c2c1fd0b4a52eb8d5b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 已知命题p:“
,
”,命题q:“
,
没有实数根”.若p与q均为真命题,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4df9e15031d426ae96cf205dcd06ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36bcb4df710cf7fc5a4159380ae5451e.png)
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19-20高一·浙江·期末
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b083e0d944a8835bc29b1495fc3f591.png)
(1)若对
都有
,求实数a的值;
(2)若
在
内递减,求实数a的取值范围;
(3)若命题:“
,
”是假命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b083e0d944a8835bc29b1495fc3f591.png)
(1)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e04b4cd16224102ef696222caa56ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13e38a5ee18ecf4af2d9a8443b4a7bc.png)
(3)若命题:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492937f6cc3c07bf36711460180e205e.png)
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19-20高一·全国·课后作业
9 . 若命题“∃x∈R,ax2-ax-2>0”是假命题,求a的取值范围?
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