解题方法
1 . 求所有的
,使
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e93438d2a1d82963d4e81fd74cab18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
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解题方法
2 . 已知l,P分别是抛物线
的准线与抛物线上一动点,定点
,
于
,且
恒成立,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18e9b80fdeaa8bd3cf97b3c214448f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdd3be8e58a9150e5b1e2a43988fd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b2310fbb79439862407eaae255793a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知集合
,
或
.
(1)当
时,求实数
的取值范围;
(2)当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193dffb2b61fb5e0820e43bad536ce01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22f69fa068b027cb6ce8f177773b4dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074a2025262fb224ccab1efd1c8c992b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7f14bf7f60fe19b509223284455f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de5b043fc62fcc61647389f6b14980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
4 . 已知函数
,若
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d64b2c3ae1d93e91b3d5327e89a8f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1acc7fd4b7019ec05557bdc7babd8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 如果关于
的不等式
和
的解集分别为
和
,那么称这两个不等式为对偶不等式.如果不等式
与不等式
为对偶不等式,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fee0af8e08d3f819c0cd66ce5b92459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f47d366d983aa78f4337d90458026d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00c4b2c5f8b74b54530406cf61ce3e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d28eab3b97cbeff2ff5527a0603ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96baee807c43e1a7b7feacf142813e8b.png)
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6 . 在
上定义运算
:
,若关于
的不等式
的解集是
的子集,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9959e7588cc7147348d228a15a517b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80110faf0025c59b79d449f03be95b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9adb4c47bbbaa2320c0a510ff336a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 设集合
为函数
的定义域,集合
为函数
的值域,集合
为不等式
的解集.
(1)求
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c55c7f765501847ae9d4f409265bde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0c4e550a976be3e78dfba6a01929fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4836a72ee4af735413d9178519f0bd9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f421c7370000b09c5b7a9f143d325594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
8 . 求所有的正实数
,使得存在实数
满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0de3c9ec823c9f66c0073fb81a285c7.png)
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21-22高一上·上海浦东新·期中
名校
解题方法
9 . 已知非空集合
,
且
,则实数m的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0636e8990f4bddda94a286b7010e93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b08c1eca8aefa3ec2e84de8b96164a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
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10 . 关于
的不等式
的解集为
或
,则有序数对
为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c5ffe9ad233b64c47fb413f6d580a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b73b2cb92d7752575fcf9013da2676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3d483587c95ec323e8fdd68f6f591b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
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