解题方法
1 . 已知函数
.
(1)求函数
在区间
上的极值点的个数.
(2)“
”是一个求和符号,例如
,
,等等.英国数学家布鲁克·泰勒发现,当
时,
,这就是麦克劳林展开式在三角函数上的一个经典应用.
证明:(i)当
时,对
,都有
;
(ii)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa05afe3090417768122ef5a715419d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4fd84394e897ebf6c4814b841d427b.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916ae6490922319a1d394fbedd8d951a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9e0e182953b1bbb73799d448ce65ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b6e1a20beab975ff39ef016e7c38a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a107eb946e0fe41629c644b7628d5cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d46ea45f17393046e9b82c3bce8a2c.png)
证明:(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a107eb946e0fe41629c644b7628d5cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad374f26bd25373e78b0999de68705ce.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fedf2798cbb949971b44f0a2314e67.png)
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2 . 已知数列
为有穷数列,且
,若数列
满足如下两个性质,则称数列
为m的k增数列:①
;②对于
,使得
的正整数对
有k个.
(1)写出所有4的1增数列;
(2)当
时,若存在m的6增数列,求m的最小值;
(3)若存在100的k增数列,求k的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c1ee4d7c3f69fdd5a250ab8862d114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9db29473c5e28422317559df73a1037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431acf301f0cf1e414b532de94708474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa768d0bb9bcf827b3e7310e35ef0fbf.png)
(1)写出所有4的1增数列;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45cf86650443d1b86c79b1e3edc7e5c.png)
(3)若存在100的k增数列,求k的最大值.
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3 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,若
分别为
的极大值点和极小值点,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682f847b99736449dbed71d1b2925f0a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068ff25c767fcbe6fe596d996031eed1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaeb1e529e152749236dbc8d9385f143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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4 . 已知球
的半径为2,点
是球
表面上的定点,且
,
,点
是球
表面上的动点,满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6a21e67e232d5db608299f0bc364ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ffe9de3a135dac9e970edd2bc979b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224dc2a6139f056e1a219acc648eae6a.png)
A.有且仅有一个点![]() ![]() | B.点![]() ![]() ![]() |
C.存在点![]() ![]() ![]() | D.![]() ![]() |
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5 . 已知数列
的通项公式为
,其前
项和为
.对任意正整数
,设
,其中
,记
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faff503e73e3cfff9e02cf20c792e4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb751c3fe573652ec72805eda1eccf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572366af4b70473246d02890f08e5bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544a4fa38ea56b322abb20155350cfe6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知函数
.
(1)当
时,求
的单调区间;
(2)设
,当
有两个极值点
,
时,总有
成立,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc64ef255eed148ba560aa5a4e5d0f1e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f7866dee992a0ffedd046637b7b9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78cd4f6503e99281832744e80bce8928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525567a8f3ec552dabc964f0b592d650.png)
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7 . 已知函数
,
(1)若
,求
的单调区间;
(2)若
是
的极小值点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4e4e1626d779b1c7e577f04b8a15dd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
8 . 已知函数
,
.
(1)若
在
上单调递增,求
的取值范围;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f383d5cb3dadc7037d04293047c4a3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5793d82a9dd0484ecceea8115ee38a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55458b8e24c399fd15bab0e7fedd6052.png)
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河南省周口市项城市正泰博文高级中学2023-2024学年高三上学期10月月考数学试题河北省邢台市五岳联盟2024届高三上学期第四次月考数学试题河北省保定市部分高中2024届高三上学期10月联考数学试题重庆市北碚区西南大学附属中学校2024届高三上学期11月期中数学试题河南省名校联盟2024届高三上学期11月段考数学试题(已下线)模块三 大招25 不等式证明——指对处理(已下线)模块三 大招6 不等式证明——指对处理
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9 . 如图,已知在直三棱柱
中,F为
的中点,E为棱
上的动点,
,
,
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea0df817e3e2cd95b9cd8f73386834c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
A.点![]() ![]() |
B.该直三棱柱![]() ![]() |
C.当三棱锥![]() ![]() ![]() |
D.若E是棱![]() ![]() ![]() |
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解题方法
10 . 已知函数
.
(1)当
时,求函数
的最小值;
(2)讨论函数
极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05dcbba2b6d108715a8ab101e093647.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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