名校
解题方法
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c1bea5df754bfb48fce5d3c9c86a2.png)
(1)讨论
的单调性;
(2)若
在
有两个极值点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c1bea5df754bfb48fce5d3c9c86a2.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17859a6c022b66ac3c2cafaf5d058aa.png)
您最近一年使用:0次
2022-09-22更新
|
1840次组卷
|
10卷引用:吉林省长春外国语学校2022-2023学年高三上学期期中考试数学试题
吉林省长春外国语学校2022-2023学年高三上学期期中考试数学试题福建省泉州市2022-2023学年高三上学期期初数学试题黑龙江省牡丹江市海林市朝鲜族中学2022-2023学年高三上学期第三次月考数学(理)试题福建省福州第十一中学2023届高三上学期期末线上适应性训练数学试题四川省成都市第十二中学2022-2023学年高三上学期10月月考理科数学试题福建省泉州市2023届高三毕业班质量监测(一)数学试题(已下线)9.6 导数的综合运用(精讲)辽宁省大连市康考迪亚高级中学2022-2023学年高三二模拟数学试题安徽省定远中学2023届高三下学期6月考前适应性检测数学试卷(已下线)专题19 导数综合-1
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2 . 风筝起源于春秋时期,是中国古代劳动人民智慧的结晶,北方也称“纸鸢”,虽经变迁,但时至今日放风筝仍是人们喜爱的户外活动.如图,一只风筝的骨架模型是四棱锥
,其中
,交点为
,
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003436547555328/3005316145381376/STEM/d5e3441fcabc4b94876ab72f0e9ca314.png?resizew=158)
(1)求证:
;
(2)为使风筝保持最大张力,平面
与底面
所成二面角的正切值应为
,求此时直线
与底面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d31469f8ec2a6c571627ff478fb8e65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd3fd00798e7ec50afafe7fa7a4f42e.png)
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003436547555328/3005316145381376/STEM/d5e3441fcabc4b94876ab72f0e9ca314.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cd8ba7eb52e38857830162e770f534.png)
(2)为使风筝保持最大张力,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d2d267caf23c33bf34f6e2764ada9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
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解题方法
3 . 在平面直角坐标系
中,已知椭圆
的长轴长为4,且焦距为2.
(1)求椭圆
的标准方程;
(2)设椭圆
的左、右顶点分别为
,直线
过
的右焦点
,且交
于
两点,若直线
与
交于点
,求证:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0f817d289cb729b212ff28cf3bcdd5.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
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4 . 已知函数
(
为自然对数的底数).
(1)证明:当
时,
;
(2)①证明:
在区间
内有4个零点;
②记①中的4个零点为
,
,
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd12794be36477b9bccf0cb76709ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff5a8f648d375cc6ccf6649cab698c6.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8761e9df624ad44f52479295c412c775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa22ebeeef8af7b816caab69508df65.png)
(2)①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371705bd40677519272e425b33481f73.png)
②记①中的4个零点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12a4eecd249473a831d0ee472470240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec13d0c7a2f811a742d7e89960c5fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361b11b445f4801ef928a198c8b46273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7237337a22bea0185e88813e44066f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa012a88f3b2d1b02b477fda0e37270.png)
您最近一年使用:0次
2022-10-17更新
|
1583次组卷
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9卷引用:吉林省长春市长春吉大附中实验学校2022-2023学年高三上学期第四次摸底考试数学试题
吉林省长春市长春吉大附中实验学校2022-2023学年高三上学期第四次摸底考试数学试题山东省潍坊市2022-2023学年高三上学期10月优生抽测数学试题湖北省武汉市华中师范大学第一附属中学2022-2023学年高三上学期期中数学试题河北省衡水中学2022-2023学年高三三调考试数学试题陕西省咸阳市武功县普集高级中学2023届高三6月九模理科数学试题陕西省咸阳市武功县普集高级中学2023届高三下学期九模文科数学试题辽宁省沈阳市新民市高级中学2023-2024学年高三上学期10月月考数学试题(已下线)第九章 导数与三角函数的联袂 专题四 利用导数证明含三角函数的不等式 微点2 利用导数证明含三角函数的不等式(二)(已下线)专题15 导数与三角函数联袂【讲】
名校
5 . 如图,在四棱锥
中,底面
是矩形,
平面
,
,
,
是
的中点,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/a4d789d9-7164-428a-8932-b1b2a27146a5.png?resizew=141)
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a148e1cc59be85f85f41cafabeae11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e2a44d05b1d387150c4b359e021ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875cd2860fb57cedf932aa0535d2e1da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/a4d789d9-7164-428a-8932-b1b2a27146a5.png?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c982eb645d77aa24c642fca6d72e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
您最近一年使用:0次
2022-11-15更新
|
4697次组卷
|
11卷引用:吉林省吉林市2022-2023学年高二上学期期中数学试题
吉林省吉林市2022-2023学年高二上学期期中数学试题广西钦州市2022-2023学年高二上学期期末考试数学试题新疆维吾尔自治区喀什地区喀什第六中学2022-2023学年高二上学期11月月考数学试题吉林省长春市长春外国语学校2022-2023学年高二下学期期中数学试题安徽省阜阳市阜南县2022-2023学年高二上学期期末联考数学试题四川省成都新津为明学校2022-2023学年高二下学期第一次月考数学(理科)试题云南省宣威市第三中学2022-2023学年高二下学期第二次月考数学试题黑龙江省绥化市绥棱县第一中学2022-2023学年高一下学期期末数学试题广东省惠州市华罗庚中学2023-2024学年高二上学期11月月考数学试题广东省深圳市罗湖高级中学2023-2024学年高二上学期12月阶段性考试数学试题陕西省西安市周至县第四中学2023-2024学年高二上学期期末数学试题
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6 . 如图,在三棱锥
中,
为等边三角形,
,平面
底面
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/3636726e-3338-40f5-b387-b63e4064d2dd.png?resizew=175)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点
在棱
上,
,且二面角
为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1095b030f441de5fb223781b00f3dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4959250cb4f4289b7c5400c7bee0426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/3636726e-3338-40f5-b387-b63e4064d2dd.png?resizew=175)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e0457cd95a0c1c189451ae2fabee19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2547225b7d1f17b04a2077258be59ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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7 . 设函数
(
且,
,
),若
是定义在
上的奇函数且
.
(1)求k和a的值;
(2)判断其单调性(无需证明),并求关于t的不等式
成立时,实数t的取值范围;
(3)函数
,
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063bea89def0fb8653574cf68e4cc268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a98186dcca4e3093a3e910b705b087.png)
(1)求k和a的值;
(2)判断其单调性(无需证明),并求关于t的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3140bcbd0dea33321ccd787b9d86d82.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2335c300e00b52581850b3502b74f072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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2022-11-14更新
|
924次组卷
|
4卷引用:吉林省实验中学2022-2023学年高一上学期期中数学试题
吉林省实验中学2022-2023学年高一上学期期中数学试题(已下线)期末模拟卷(B能力卷)-2022-2023学年高一数学分层训练AB卷(人教B版2019第一册、第二册)山东省菏泽第一中学2023-2024学年高三上学期9月月考数学试题(已下线)函数-综合测试卷A卷
名校
解题方法
8 . 已知数列
的前n项和为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c599e7cec6d192fb73218e7882ceca.png)
(1)求
的通项公式
(2)求证数列
是等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c599e7cec6d192fb73218e7882ceca.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)求证数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
您最近一年使用:0次
2022-11-28更新
|
1770次组卷
|
8卷引用:吉林省辽源市第五中学校2022-2023学年高二上学期期中数学试题
名校
解题方法
9 . 已知函数
.
(1)判断
在
上的单调性,并用定义加以证明;
(2)设函数
,若
,
,
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfee2c4efc91317d8e0ade4c839d863.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0109d06b8be2e402b5ffbb0aeb501009.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5438ef0cb6c82d3822271b123b0a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f7c7436a45148bbb09229b6a1d7b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ee00465e657f1e774ca7750158f4a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3bb43da17137e6c50874a8086df278.png)
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2022-11-10更新
|
403次组卷
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5卷引用:吉林省部分名校2022-2023学年高一上学期期中考试数学试题
名校
10 . 如图,在四棱锥P-ABCD中,平面PAB⊥平面ABCD,底面ABCD为菱形,PA=PB=AB=2,E为AD中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/0d26d46a-b14a-4162-94cc-76e6ebadc26c.png?resizew=174)
(1)证明:AC⊥PE;
(2)若AC=2,F点在线段AD上,当直线PF与平面PCD所成角的正弦值为
,求AF的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/0d26d46a-b14a-4162-94cc-76e6ebadc26c.png?resizew=174)
(1)证明:AC⊥PE;
(2)若AC=2,F点在线段AD上,当直线PF与平面PCD所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
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2022-11-10更新
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2卷引用:吉林省长春市第二中学2022-2023学年高二上学期11月月考数学试题