2012·江西宜春·三模
解题方法
1 . 已知函数
.
(1)证明函数
的图像关于点
对称;
(2)若
,求
;
(3)在(2)的条件下,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1590dc8531070cf8bb9cacb637b132e.png)
,
为数列
的前
项和,若
对一切
都成立,试求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b1dde2ed03e165f2490276b9bebf7c.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461d7c9510f0cd34115560268e06da80.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16253acdda1ff4ec5fe09450d5f5114e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1590dc8531070cf8bb9cacb637b132e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496f9d942ea034a488544eceef6d84c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26494ed736ae54119dfba0508d0c69ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209559aca6bf32705588b6a40e0b7320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 设
、
是函数
的图象上任两点,且
,已知点
横坐标为
,
(1)求点
的纵坐标;
(2)若
,其中
且
,求
.
(3)已知
,其中
,
为数列
的前
项和, 若
对一切
都成立,求
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c63e109662c7a7c88470911f611629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8557898f1c943a431801ecfb06ed84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdba78ae58636da2a22ff5fde671fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b0776a7aedee36d56e266b8a14290e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ad617393a9b09e0201bb54f9a58705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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3 . 设奇函数
对任意
都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e2118fa68ca2939b815df2d1aa6eb.png)
求
和
的值;
数列
满足:
,数列
是等差数列吗?请给予证明;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e2118fa68ca2939b815df2d1aa6eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf1693d7d386d92a5ab540f194251cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fef5f357f94e1e162cc47a99f9ab1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc48b77d1960d53b8f85ae984e1a8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd23eefdd44e679b004f2c978e87208e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee01b7c9762dc0193fef13df0d17089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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4 . 设
是函数
的图象上两点,且
,已知点
的横坐标为
.
(1)求证:
点的纵坐标是定值;
(2)定义
,其中
且
,
①求
的值;
②设
时,
,若对于任意
,不等式
恒成立,试求实数
的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eabd6f2b9add9d973e3c7b004ad11e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69fea98eef09fe9ff3b9a2e9907cff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb215f368a2704efba3ddbf6e538e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52c49ca04f3d1a106138341b5a1b529.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af19518906ab015e7ff6c2ad1efacc92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fb6c888d9874ef6b64388339a67705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2011·广东揭阳·一模
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d48d4681fc718d1d96fe05524763ea8.png)
(1)求
的值;
(2)已知数列
满足
,求证数列
是等差数列;
(3)已知
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d48d4681fc718d1d96fe05524763ea8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1621733ea203c3691509e4b000fe532.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40860b4eacfe3cddf54fede98f071657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099a64d86bd0b4602578d910322adc1b.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e2a79fefbb5382ba1edcf508d81a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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11-12高三上·四川攀枝花·阶段练习
6 . 已知
是
上的奇函数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0df1fea47a9cbaffc94f6ed8665fea5.png)
,则数列
的通项公式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579b92a162387d662188fee57561e43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0df1fea47a9cbaffc94f6ed8665fea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eead6db3d95f369d49954ff9504a25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10-11高三上·河南焦作·阶段练习
解题方法
7 . 已知
,
、
是函数
图像上两点,且线段
中点
的横坐标是
.
(1)求证:点
的纵坐标是定值;
(2)若数列
的通项公式为
,求数列
的前
项和
;
(3)若
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a295c9e7c191502399bb60db40f91833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b225d772013d021cf1bfe7b9421fa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b7e35faab6d74fa0c36599c39d1698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/919fafe66d29fd87c90e1c51ef830c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1752474698cd5466dd180df0a00ba9c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f62d620374c35e1d8d90b6f8b6e801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7b37689bd020b92e93ce11d9e69262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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