20-21高二下·上海浦东新·期末
名校
1 . 已知定义在R上的函数
与
.
(1)对于任意满足
的实数p,q,r均有
并判断函数
的奇偶性,并说明理由
(2)函数
与
(均为奇函数,
在
上是增函数,
在
上是增函数,试判断函数
与
在R上是否是增函数?如果是请证明,如果不是请说明理由.
(3)函数
与
均为单调递增的一次函数,
为整数当且仅当
为整数.求证:对一切
,
为整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)对于任意满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9534ea8db35f625f10fdd3271417b46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ace78ab406e053a72c7f7bdb3a7ec8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2728a4ef67b88090a84c1e5746c7f6b8.png)
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解题方法
2 . (1)设x,y为正数,
,证明
;
(2)x,
,
,求证:对于任意正整数n,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b344a55415f511aa8f43d47684bb050f.png)
(2)x,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7534520ae43c10f7b1b48168ee527315.png)
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3 . 若数集M至少含有3个数,且对于其中的任意3个不同数a,b,c(a<b<c),a,b,c都不能成为等差数列,则称M为“α集”.
(1)判断集合{1,2,4,8,⋯,2n}(n∈N*,n≥3)是否是α集?说明理由;
(2)已知k∈N*,k≥3.集合A是集合{1,2,3,⋯,k}的一个子集,设集合B={x+2k﹣1|x∈A},求证:若A是α集,则A∪B也是α集;
(3)设集合
,判断集合C是否是α集,证明你的结论.
(1)判断集合{1,2,4,8,⋯,2n}(n∈N*,n≥3)是否是α集?说明理由;
(2)已知k∈N*,k≥3.集合A是集合{1,2,3,⋯,k}的一个子集,设集合B={x+2k﹣1|x∈A},求证:若A是α集,则A∪B也是α集;
(3)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f3e417826470991245435ff5a13625.png)
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名校
4 . 如图,在
中,
.请你设计两种不同的分法,将
分割成四个小三角形,使得其中两个是全等三角形,而另外两个是相似但不全等的直角三角形,请画出分割线段,并在两个全等三角形中标出一对相等的内角的度数(画图工具不限,不要求证明,不要求写出画法).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43136f56e59f3f9e878d0c5d4ccbeecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/e5a1e6c9-8506-4126-8703-33ff47ce6dde.png?resizew=301)
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2021高二·江苏·专题练习
名校
5 . 在平面直角坐标系xOy中,圆C:
与圆
:
相切于点
,且直线l:
与圆C有公共点.
(1)求圆C的方程;
(2)设点P为圆C上的动点,直线l分别与x轴和y轴交于点M,N.
①求证:存在定点B,使得
;
②求当
取得最小值时,直线PN的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a072e7f6a37068ac8cb84f6325a39303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d79c615ed8c1715a846b6cd1a8508c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4a5b6cff5be832192effc8af92379a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
(1)求圆C的方程;
(2)设点P为圆C上的动点,直线l分别与x轴和y轴交于点M,N.
①求证:存在定点B,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91de14a4ea45698cbb42799fd6b746a9.png)
②求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb9470c8bedcd124d03b3874b70ef57.png)
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6 . 已知27x=67,81y=603,求证:4y﹣3x=2.
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2021高一·全国·专题练习
7 . 若k,m,p为整数,且2×4k﹣p=4m﹣p+1,求证:m=p=k.
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8 . 若
行
列的数表![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201cf35cdc3a08d6e25e2305f20e26db.png)
满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5ee774243d2ec9dd07c5649f330aaa.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc516f464ed15056e9eade58b64cea2.png)
,
,记这样的一个数表为
,对于
,记集合
,
表示集合
中元素的个数.
(1)已知
,写出
的值;
(2)是否存在数表
满足
?若存在,求出
,若不存在,说明理由;
(3)对于数表
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201cf35cdc3a08d6e25e2305f20e26db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855ce769f6795d1463744a0d74901fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5ee774243d2ec9dd07c5649f330aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78e2c4cb91cccb91ff2e37c03fade62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc516f464ed15056e9eade58b64cea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d723602ddd80eaaf59aa41caa70e15ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e1f2b0fc9c8bec8ab88ad95e5c07ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514311d5156a8b313a5d5c4024e7e798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514311d5156a8b313a5d5c4024e7e798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64b005279d22707018d3e7150ce83f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9e1d41ecbb1567fef7037ac9ec5737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cc16a67d0a57e5f56eb34ca9104e75.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bb7b07735c73132ba89fb85d7042c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f565787702ee909476bb3a68222d6724.png)
(2)是否存在数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc51b899292927609a04a5139106af2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f57283104d5d1d4f23804560b698be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc51b899292927609a04a5139106af2c.png)
(3)对于数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d01a5966530fa8661646a0e46af4e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241cdea13c95b189bcf0a626037c390b.png)
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9 . 设各项均为正数的数列
的前n项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)若
,求数列
的通项公式;
(2)若
(
,
,
为常数),且
,求数列
的通项公式;
(3)若
(
,
,
、
为常数),且
,求数列
的通项公式;
(4)若
(
,
,
、
、c为常数),且
,求证
为等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabb9770b90e11287af9278532cdc897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e12a193c038118dc0dab0c250117b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f56a22d95eab351e09da1afb8153bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45fa60ee6a6ba02f8b2a5d14ee752dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eac5c466be1ff2be0b4b369d9ac5c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a900d0b93f73490e7efc2e444bb016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45fa60ee6a6ba02f8b2a5d14ee752dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f10eec72002b1e532ca856dfb82480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a970a633535593b590976b4c06c46ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45fa60ee6a6ba02f8b2a5d14ee752dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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10 . 已知:方程式
.求证:不论
取任何实数值,方程的曲线总经过两定点
,
,并求出
,
两点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a844b985c31c1423e92d83b92fe8b464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
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