2022高一上·全国·专题练习
1 . 已知
,计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca65d671f250571d8dab75b7f7a3cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f419b485437357df3ca143ac54d9549.png)
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2 . 已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca65d671f250571d8dab75b7f7a3cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f6d5834941e0189eb04ba327965a54.png)
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3 . 化简求值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f74bc106be1201070a022612a7a47da.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b038ddc8c7f9fc3cb19529e7410ecd.png)
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2022高一上·全国·专题练习
4 . 求值
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11257e6016ab71fdaab229396e882bfd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736961975c530d9faf8b2243e151f1db.png)
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2022高一上·全国·专题练习
5 . 用描述法表示下列集合:
(1)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f3acc45993b94062d1731e883eaf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)被
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f46d63366c0a485261070792ab959b.png)
(4)平面直角坐标系中第二象限内的点组成的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2022高一上·全国·专题练习
6 . 设
,
,
,求
最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26892c122755fb8e9a5de6476e0a166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5625448c60fd2640c13c5f6b4238b2.png)
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2022高一上·全国·专题练习
解题方法
7 . 已知
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8bbc41f781781d299046ef3a83619b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2679dad27d66daaf122b8e280cc0cd0a.png)
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2022高一上·全国·专题练习
8 . 设
,写出集合
的子集,并指出其中哪些是它的真子集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b31ed7916f97b2376db817caf205d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2022高一上·全国·专题练习
解题方法
9 . 求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a377dfcbffeb0de8859b5340fe858965.png)
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