解题方法
1 . 已知函数
,若
恒成立,则实数
的取值范围________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f21def221abdf142b90bdd2bef2aea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-04-16更新
|
455次组卷
|
2卷引用:广东省深圳科学高中2022-2023学年高二下学期期中考试数学试卷
2 . 已知
为等比数列
的前n项和,且
,
,则
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb7868d7e00edea7c8f4e4e3d8f4537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
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3 . 如图所示,一套组合玩具需在一半径为3的球外罩上一个倒置圆锥,则圆锥体积的最小值为__________ .
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4 . 已知函数
,正实数
满足
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77fb0e7a553dab8fefb6e484eddc482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23bd373e9b3ddd6f351a881ce163617c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4208a86040fd5d1fc91cc6714fb415f1.png)
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解题方法
5 . 已知
是定义域为
的奇函数,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf7ee48f89034c50f17253321722d3a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a854227d789fa69c4f13371affb4ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45af87a3c97cf74f6bd13977827315d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf7ee48f89034c50f17253321722d3a.png)
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6 . 圆
是锐角
的外接圆,
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e83ac5efc4c142c43c5e7a3e156c407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b0ba14e41e306e5633ad4bf1cdedd8.png)
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7 . 已知某地区烟民的肺癌发病率为
,先用低剂量药物
进行肺癌䈐查,检查结果分阳性和阴性,阳性被认为是患病,阴性被认为是无病.医学研究表明,化验结果是存在错误的,化验的准确率为
,即患有肺癌的人其化验结果
呈阳性,而没有患肺癌的人其化验结果
呈阴性.则该地区烟民没有患肺癌且被检测出阳性的概率为__________ ;现某烟民的检验结果为阳性,请问他患肺癌的概率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edb1e0c3e2fb29b0b35d51d22a5710d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
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8 . 若
的展开式中常数项为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb50b6fbe737e673500d92bed1a6d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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2024-04-14更新
|
803次组卷
|
4卷引用:天津市河北区2023-2024学年高三总复习质量检测(一)数学试卷
解题方法
9 . 已知函数
是定义为
,对于
,有
,且
,则不等式
的解集______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da3a6d011679952771607b3a166676b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de19a0e7895338ec09a733e4ce332bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab660f169550c511ce7aff939bc56261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b17b16fdf70d2a885f5ab346afd18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/867e3f32ee200fd23d18cb3b2d7fed00.png)
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10 . 已知椭圆
:
(
)的左、右焦点分别为
,
,下顶点为
,直线
与椭圆
的另一个交点为
,若
为等腰三角形,则椭圆
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88012f614ee4f6d0edeed4e24bcca580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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