名校
1 .
的展开式中常数项为________ .(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d408dd98674ee0b36f9a2cea073bdff9.png)
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2020-04-27更新
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509次组卷
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4卷引用:2020届福建省厦门市高三第一次质量检查(一模)数学试题(理科)
名校
2 . 若
,当
时,实数
的值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00938f2699dbbea2dc78b070698a4aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7d042077001fdaa23fa8482660fe31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 设有下面四个命题,
若
,则
;
若
,则
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3c3c8f3d94894cbd783960ca9c8a1.png)
的中间项为
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428f740d77d1a1f4303effd6c1e87028.png)
的中间项为
;其中真命题为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a617a9b648bfb804eb7ac1cf357f8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41129a3c6b89a1078052f9706ab5773a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad549530a4ce77778b5b9c7eba7ed22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f731aa23c326a79f5a97c0b805166272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41129a3c6b89a1078052f9706ab5773a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7eea726b2854bcb461f514f2d21c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3c3c8f3d94894cbd783960ca9c8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422bf28a37e624fb75e669c74cb00e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef63ad7b61f3fae0ac81148e7700ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428f740d77d1a1f4303effd6c1e87028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422bf28a37e624fb75e669c74cb00e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14aa86103438dee429c799a6c62e79b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知等比数列
的第
项是二项式
展开式的常数项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618562fbd60b72d016a693ecee1dfd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd78a5134586cbd95730e3aa4ec8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618562fbd60b72d016a693ecee1dfd5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次