解题方法
1 . 已知
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d8963a312a4e8af2bf1b836a223231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e3040f1f3497ddc49c19b10b045a98.png)
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2 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a262f61de890862db40b7f6b8bc15e06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129b8b3a12492b7150aad36b999973f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81f69965e02c4ae25b7d6fafc59840a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知
,
,则“
”是“
”的( )
![](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/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5396b403029b41214dd52225eb3c0031.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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4 . 已知兰溪每次投掷飞镖中靶的概率为0.2,若兰溪连续投掷飞镖
次,要使飞镖最少中靶一次的概率超过90%,至少需要投掷飞镖______ 次.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5114e1dbd4fc973e99293e1fdb3def.png)
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5 . 已知实数a,b,c满足
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76d1942ae5a655bd4226f9dde4953c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f4f98834e82cd74b57ac5f64d934c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e926611cdd0f041a00db16668016a92.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知函数
(
且
).
(1)若
,且
,求函数
的零点;
(2)当
时,
有最小值
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbaa09784bcac00cdb70865cfa736e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4148220a84d34d5993f6dad9e607ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6102c97367fa07b15568edc434a046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-01-08更新
|
316次组卷
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3卷引用:河北省张家口市2022-2023学年高一上学期期末数学试题
7 . 计算下列各式的值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ddcf537a91e6ce45705b2de35cfb82.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e324247782eeb32f9bf0eea75769b918.png)
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解题方法
8 . 方程
的解所在的区间是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af09be141a08c66733f3669b2bd4acb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-10更新
|
524次组卷
|
7卷引用:河北省张家口市2021-2022学年高一上学期期末数学(B)试题
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9 . 已知递增数列
满足
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fa62b3f5629918fc33dc93a59a3b9f.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0978a001b87537f60af85a9a4cea2a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5519427af84b16b911b7d60142bb91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b119ac52fae0d3f4cdebe05e9e7d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fa62b3f5629918fc33dc93a59a3b9f.png)
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10 . (1)计算
;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4d3c89044ffd4238ca6484f16687f7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d55511b9916289d73e28856c446199.png)
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2021-09-18更新
|
759次组卷
|
2卷引用:河北省张家口市第一中学2020-2021学年高一上学期12月月考数学试题