名校
1 . 设命题p:函数
定义域为
;命题
,使得不等式
成立.
(1)如果p是真命题,求实数a的取值范围;
(2)如果p,q中只有一个真命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a5fc5c88c2050e9639929afb608191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0228cd18bf02efbba011d7b79ba9306b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbaeea9bcd5e72c6d8fbae74118d063b.png)
(1)如果p是真命题,求实数a的取值范围;
(2)如果p,q中只有一个真命题,求实数a的取值范围.
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解题方法
2 . 已知命题p:实数x满足
,命题q:实数x满足
.
(1)当
时,若“p且q”为真,求实数x的取值范围;
(2)若q是p的充分条件,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416d97b734df4b4dda8b05529831553f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9472f8d1d03ad10940d8f424e16dd6ee.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
(2)若q是p的充分条件,求实数m的取值范围.
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3 . 命题
:
,
,命题q:
,都有
.实数m同时满足命题
为真命题且命题
为假命题,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d274b4edbba503ea1b3ac1e3d1bbfe91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68a689298e916fe8957afb1a63f2008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c6a023973edd44b5c8e48f557f5a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a6da1a90deb4d4be47f337e988c267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
在
上单调递增,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
,若
为真命题,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14197438f83fb87b875e3ac0708fe4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8618df662e8bc5a9704aa2a82c60174d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7db735657e7a10db8310a04ecc1542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 已知命题p:对任意实数都有
恒成立,命题q:关于x的方程
有实数根.若
为真命题,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abdea09520a9022a2f1e07bf12afe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc24bf4689a980b8734c67ac57b9763a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知命题
在
内单调递增;命题
:关于
的不等式
对任意实数
恒成立.
(1)若
为真命题,求实数
的取值范围.
(2)若
为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9222af8b2091aa600f08af05135b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf87d9d48c3de0a5e9f1a70e51a0bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8a41d6f16f84136233eb87a48d58cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
7 . 设命题
函数
是增函数;命题
方程
表示椭圆. 若
是真命题,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e86d26d1581ca1aa552407916c116b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03da0343dbee76ad92f77abb4ebd7e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
8 . 已知命题
实数
满足
,命题
函数
是增函数.若
为真命题,
为假命题,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdba319829de0055008eee66e6d3a024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969d22dbc15cede45b91c501914ddb72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
9 . 设
:实数
满足
,
:实数
满足
.
(1)若
,且
为真,求实数
的取值范围;
(2)若
且
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebff6619f0334a3494d94c6cacf2f2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e131db7391bc2b6baaccaca285ab64ae.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
10 . 已知命题p:方程
有实根,q:不等式
的解集为R.若命题“
”是假命题,则实数m的取值范围是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36bcb4df710cf7fc5a4159380ae5451e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae3e0f9edf0db6cc66f1f62b334975c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
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