已知函数
,
.
(Ⅰ)若函数
与
的图像在点
处有相同的切线,求
的值;
(Ⅱ)当
时,
恒成立,求整数
的最大值;
(Ⅲ)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95095d102f524f9707d47d20dd0aa84b.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7c4adef3485e8ac6e50d1926365327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca8398770a9a09f21a3bdd001caed12.png)
(Ⅰ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5b017de7aec0711fef053f1a0197a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95095d102f524f9707d47d20dd0aa84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a632b7c02157ba78348a8b59d5cc3980.png)
更新时间:2017-09-16 18:12:38
|
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解答题-问答题
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解题方法
【推荐1】已知函数
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(1)求实数a的值及函数
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(2)用
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(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400803f620f09b09f75f75c53c1b0c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c0a19c9b3031fdc7b55f684e39dd60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dbea82fac26610043522cff4232393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400803f620f09b09f75f75c53c1b0c79.png)
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【推荐2】已知函数
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的一条切线斜率为4,求该切线方程;
(2)试讨论
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c4eac3b4363e47bdda2e804e5178cd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)试讨论
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的增函数,则称
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(2)证明:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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(1)求
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(2)证明:
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【推荐2】已知函数
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db752b359dc512a401f36d0730a035d9.png)
(1)讨论
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8b79cbafa3dd8602fa3a103b5000d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c99ca3d73d87d3fdbef88c859dd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec4637aaf086df9ca5576808557ba8d.png)
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,集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca8e316472565574840fed94a753d74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3959ccae90f1943987822d56de09b955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea4da4040ef6e7e6d7f5b11376726b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9d0d79fd0efdb59c9ca65bfae4a0861.png)
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(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc52491da29f5c36e114323d34dd9ca7.png)
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,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
两个零点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635914dd94c27290d5573eeedc629234.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d501e5e87d376a1050ca79e3a1240f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
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【推荐1】已知函数
,
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(1)讨论
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时
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(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04bd9759565e4cd93839a2ce2b31b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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(1)当
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时,证明不等式:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd780d5c03ed021bf830386e74297553.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448b7c7a096e440e537836bcc1493335.png)
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【推荐3】(1)若
,
恒成立,求实数
的最大值
;
(2)在(1)的条件下,求证:函数
在区间
内存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83095be42f7ce77f75c4e0f71a6cd324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
(2)在(1)的条件下,求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c176ec440bdf80bead9cb5ff9cf95ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d56f1c70adf39a806ba0357df50cde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9000448e39783b286d6eeb177f544a.png)
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