解题方法
1 . 设集合
,则集合
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ae1fed1a6c616f366685c2d3d54ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 设集合
,
.
(1)求集合
;
(2)设集合
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d483673af6a92b8617125f34093e25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b96b1e2e9326bd5d70616e13aa9095c.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c51e1aee5513d063315cd641921db49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e544b1304a6bbc87283cf741f134cebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 不等式
的解集为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41105b7e1e748d4e4f373deba60de531.png)
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4 . 求下列不等式的解集
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392ad3a85cb00d53e536959687a7c7a0.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d8a600e7b6a10eeb9f96c3462cf35e.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d042515ff69a42c9cbcacfdf96251c.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392ad3a85cb00d53e536959687a7c7a0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d8a600e7b6a10eeb9f96c3462cf35e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d042515ff69a42c9cbcacfdf96251c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1e54788475ada391af43b0643784eb.png)
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5 . 不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ba929036bc45b3f7ea7a60feb7ff99.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38529a579341b57c9980ff73713c4a66.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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7 . 求下列关于x的不等式的解集:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d1dec3ca48f75885dce51a3dad9f2e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a260c6a3dd5ad7a35f2d1b268671df44.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6a5f14e9d2f6ead10bb6bcdffadca1.png)
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解题方法
8 . 已知函数
,
(
).
(1)当
时,解关于x的不等式
;
(2)判断函数
的奇偶性,并证明;
(3)若
在
上恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6987701d00f14d9c9cd45cbdb000607b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ca5bf7e8d0959c1ca65962b6a4200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49341b57eb107f416a014903ce25a8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed9438ae4a904513246620ab76403d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
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9 . 已知集合
,
.
(1)当a=1时,求
;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c266dbafcd8866309fa5f27d6bd9ea62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c061199b869da1de714c6d08994bd9f9.png)
(1)当a=1时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43d15751aae2df43133a023de9bbc51.png)
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解题方法
10 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18dd49adb76cd2dd2723c05f5854d842.png)
(1)求
;
;
(2)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18dd49adb76cd2dd2723c05f5854d842.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e544b1304a6bbc87283cf741f134cebe.png)
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