名校
解题方法
1 . 如图,在三棱柱中,
是边长为4的正方形.
为矩形,
,
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
(3)证明:在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324bc6bf263ca1feeaf1b61eddab330.png)
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名校
解题方法
2 . 将平面直角坐标系中的一列点
.记为
,设
,其中
为与y轴正方向相同的单位向量若对任意的正整数n,都有
,则称
为T点列.
(1)判断点列
是否为T点列,直接写出结果;
(2)求证
是T点列:
(3)若
为T点列,且
.任取其中连续三点
,证明
为钝角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fa0a4178c2ab8acf3342d228ed8e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869434cabde100f74953780653d3a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88364f251f3d8a14d9784588f45f7acf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e972e658495ad2b603e2b11f3d5e20ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
(1)判断点列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf87e7e5ae1e3d45c2ccd73dd8d29a2.png)
(2)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6ec98836c8c456b45ab94f9aa5a7fb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f4f7da7655b76971cdf3e11600a9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ed0fe3ab3607bcc987be7ba9ae5bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade2b9aa97d71e08923f71c8eba032a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24dc108423b4ca4d3b94e9779089f73.png)
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3 . 对于定义域为D的函数
,如果存在区间
,同时满足:①
在
内是单调函数,②当
时,
的取值范围
,则称
是该函数的“k阶和谐区间”.
(1)证明:
是函数
的一个“3阶和谐区间”;
(2)求证:函数
不存在“2阶和谐区间”;
(3)已知函数
存在“1阶和谐区间
,当a变化时,求出
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e1c4e16e2ff56b5eb232e64fb16f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe276c0522839b1d37086d92612aa7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c042bfa9459620418970f38c0cc7d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6bfefa5b41faae17987876d570685d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243881c59e5d46fbf1335d115cab85b7.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f2c65594567811da214a4f5a6cac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
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4 . 下列命题正确的有:________ .
①
;
②已知
,若
,则
.
③用反证法证明“已知
,且
,求证:
.”时,应假设“
且
”;
④命题“若
,则
”的逆否命题是“若
,则
”.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d06a4bdf067ee8c14ce02d71271ddf.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecb11de93939d81b65541b0bbdeb7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efd32ba5030535598e979fd6d3a4d5c.png)
③用反证法证明“已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c988d709ba8cd8aed6cb83d76c0ba89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5977232839b54df456aeeacb13512d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c412d5329ba909164329663b7eecdfe.png)
④命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8a2a94168af9b16ce89271a5d8dc6b.png)
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解题方法
5 . 在三棱柱
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
平面
,
分别为
的中点,
.
![](https://img.xkw.com/dksih/QBM/2021/10/13/2828421454585856/2828718672060416/STEM/50d69960c34a494091bd5eeb9de0a74e.png?resizew=177)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
平面
;
(2)证明:直线
与平面
相交.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46516d41dadbc2af56b681dcd5f15a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a898391acfefad6656a81913f51d0255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efe30b0b1a3b0c49b4fa58b7cce943b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9b17d5fe8e039d5de1f195b7202778.png)
![](https://img.xkw.com/dksih/QBM/2021/10/13/2828421454585856/2828718672060416/STEM/50d69960c34a494091bd5eeb9de0a74e.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
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6 . 已知函数
.
(1)求
;
(2)判断函数的奇偶性,并加以证明;
(3)求证:函数在
上单调递减.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f856cd620c2538680d2b272269d6559.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981b2f8d56d6629da4eb1fc8a701fb9a.png)
(2)判断函数的奇偶性,并加以证明;
(3)求证:函数在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
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7 . 如图,
是正方形,
平面
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be264322127742b5f1b254acc5db0b.png)
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842768438591488/2844281671016448/STEM/df3d17bb079a4e6d94ab2d81cac2b0e0.png?resizew=257)
(1)求证:
;
(2)求二面角
的余弦值;
(3)设点
是线段
上一个动点,试确定点
的位置,使得
平面
,证明你的结论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15cd53fe7b73365723ce4789bb259d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8be264322127742b5f1b254acc5db0b.png)
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842768438591488/2844281671016448/STEM/df3d17bb079a4e6d94ab2d81cac2b0e0.png?resizew=257)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589ddae20626f9aaac616d2a3b5d95bd.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f717b7d4d0978eec7330afec554c078.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac480d8d9d7821b62a603cf5cfda236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
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8 . 设数集
满足:①任意
,有
;②任意
、
,有
或
,则称数集
具有性质
.
(1)判断数集
是否具有性质
,并说明理由;
(2)若数集
且
具有性质
.
(i)当
时,求证:
、
、
、
是等差数列;
(ii)当
、
、
、
不是等差数列时,写出
的最大值.(结论不需要证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c8b2714e2f6ddfdd6b05d3b4de1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e5872f45d4b878b0119997cb5bae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84734fbba70c0b45045fabf8090f810b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2161a642b95463642adc3892850bc74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ddc189d2c675b0e2ade4f7ed40f66fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8509c4b8fef1e10a20fe1c3e9243ac8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c7867969b14fd642147188b6ebf29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2021-09-26更新
|
589次组卷
|
7卷引用:北京市丰台区2021届高三二模数学试题
解题方法
9 . 如图,在四棱锥P-ABCD中,ABCD是正方形,PD⊥平面ABCD,PD=AB=2,点E,F分别是PD,BC的中点.
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758233597239296/2778959628083200/STEM/18bf90103a154a4dadc3e8e10363aec3.png?resizew=169)
(1)求证:平面PBC⊥平面PDC;
(2)在线段PC上确定一点G,使平面EFG∥平面PAB,并给出证明;
(3)求二面角P-AC-D的正弦值,并求出D到平面PAC的距离.
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758233597239296/2778959628083200/STEM/18bf90103a154a4dadc3e8e10363aec3.png?resizew=169)
(1)求证:平面PBC⊥平面PDC;
(2)在线段PC上确定一点G,使平面EFG∥平面PAB,并给出证明;
(3)求二面角P-AC-D的正弦值,并求出D到平面PAC的距离.
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解题方法
10 . 设函数
的定义域为
.若存在常数
,
,使得对于任意
,
成立,则称函数
具有性质
.
(1)判断函数
和
具有性质
?(结论不要求证明)
(2)若函数
具有性质
,且其对应的
,
.已知当
时,
,求函数
在区间
上的最大值;
(3)若函数
具有性质
,且直线
为其图像的一条对称轴,证明:
为周期函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809ea2eff71a0de3db640313ad25b7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404d068b60dd901194f1684d023212ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8073fa685bc10cf01a0128220feac940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e661ad31aa4c6d8684923cf904bf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d0588454ec8b64bf86578fb90b39e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f9b35017daa8b524c5717a355834a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55351494cd96fed31976fdc5d9c7292.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
2021-08-01更新
|
580次组卷
|
3卷引用:北京市西城区2020-2021学年高一下学期期末数学试题