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1 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
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2 . 已知
的展开式中含
项的系数为160,则实数a的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f8bb8f82df1f8584b8a9d8c8281fdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae666ea089aeed6e8df798c81dd2f187.png)
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3 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933347fd4d93628c8a9cb6a540560471.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273a61f0869406c75be25dab20ec0af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836147cc2b534de6b691c427643a0493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933347fd4d93628c8a9cb6a540560471.png)
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4 .
的展开式中,
的系数是____________ (用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1678303de7da9b8431429e588acb78bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
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解题方法
5 . 已知随机变量
的分布列如下:
若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc23dc1709498e8920d7d243213190b2.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![]() | 0 | 1 | 2 |
![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467bf9f6b91ee1f6cfbe3ac944403f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc23dc1709498e8920d7d243213190b2.png)
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6 . 如图是梯形ABCD按照斜二测画出的直观图
,其中
,
,
,则原梯形ABCD的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7139f32092256a2e816d826d501be98a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adaecdc48822336228a16ca4a384b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd69b5606f39af84f1d8da4bd6eab04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b035ac3ca558e055af5aa248b516a8.png)
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7 . 已知复数
满足
(
是虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1670bf25e31eb1e929b583872a3981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
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8 . 已知复数
满足以下条件:①复数在复平面内对应的点位于第一象限;②复数的模为5;③复数的实部大于虚部,则复数
可以是__________ .(填写一个答案即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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9 . 为研究高中生的性别与是否喜欢数学课程之间的关系,运用
列联表进行检验,经计算
,参考下表,则认为“性别与喜欢数学有关”犯错误的概率不超过______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a4f48a10fac985cdacada6957853a8.png)
![]() | 0.100 | 0.050 | 0.025 | 0.010 | 0.001 |
![]() | 2.706 | 3.841 | 5.024 | 6.635 | 10.828 |
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10 . 若函数
在区间
上单调递增,则k的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e90a7e13e29faa5acd0ef63dece869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3741faf608b0cb549d852b1037d0046c.png)
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