1 . 请从①
;②
;③
这三个条件中任选一个,补充在下列问题中,并加以解答.(如未作出选择,则按照选择①评分)
在
中,a,b,c分别是角A,B,C的对边,若__________.
(1)求角B的大小;
(2)若
为锐角三角形,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2135d486dc571953e077f23e931e919f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc1143c4bfff9b1b2783c350e36ce2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d323eb7501a1c08efd42ea72e45717.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
您最近一年使用:0次
2023-08-01更新
|
932次组卷
|
4卷引用:福建省宁德第一中学2020-2021学年高二上学期开学检测数学试题
2 . 已知圆
为圆
上的点,过点
作
轴于点
,点
是直线
上一点,且满足
.
(1)求点
的轨迹
的方程;
(2)设
分别为轨迹
与
轴的左、右交点,
是轨迹
上不同于
的动点,直线
,
与直线
分别交于
两点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dad1c2707ac8e2715465af33926db09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66bf4538a775c075e2a1e4b1b9e2402f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0cb4b2e0a7af501779001e4f6bb6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26389703c40a3c2eac927e372858709.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
名校
解题方法
3 . 已知椭圆C:
,
为右焦点,过F的直线l交椭圆C与M,N两点,当直线l垂直于x轴时,直线
的斜率为
,其中O为坐标原点.
(1)求椭圆C的方程;
(2)点P为椭圆上一动点,四边形
的面积为S,如果四边形
是平行四边形,且
,试求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
(1)求椭圆C的方程;
(2)点P为椭圆上一动点,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897c7437010c3d5b152274d9635c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897c7437010c3d5b152274d9635c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6c3b1082513d8e893ebeafea43e31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
4 . 已知函数
的极值为
.
(1)求
的值;
(2)若
,判断方程
是否恒有解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001d34e5bd26eaf567170acacf03abc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92be82894508d5fd942f8933e736b728.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da5f44c2df223671baa50ee3715be8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94ea992e3f9c206cd3e315d8b968a6f.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)当
时,讨论
极值点的个数;
(2)讨论函数
的零点个数的情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd95036a3ce62e3967969741a5bc276.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2024-01-11更新
|
609次组卷
|
3卷引用:内蒙古赤峰市2021届高三上学期12月双百金科大联考数学(文)试题
内蒙古赤峰市2021届高三上学期12月双百金科大联考数学(文)试题广东省中山市第一中学2024届高三第一次调研数学试题(已下线)专题1.8 导数的零点问题(强化训练)-2023-2024学年高二数学下学期重难点突破及混淆易错规避(人教A版2019)
2021高三·全国·专题练习
名校
6 . 已知四棱锥
,底面
为菱形,
为
上的点,过
的平面分别交
于点
,且
∥平面
.
(1)证明:
;
(2)当
为
的中点,
与平面
所成的角为
,求平面
与平面
所成的锐二面角的余弦值.
![](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/696ce5422605ffbaedab96bff18840db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e85bc9f73e86cfb6ce9b076433f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd68fe22ed9909165aedc98d1d8e3a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/17/cac947bb-1f01-499b-8f96-1c9eab029f59.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828247a3338571cb0d4ba2a5bf88929c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cd821556abe4b0bd3318aa07e3d05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
您最近一年使用:0次
2023-08-13更新
|
2067次组卷
|
17卷引用:江苏省淮安市盱眙中学2020-2021学年高三上学期期中数学试题
江苏省淮安市盱眙中学2020-2021学年高三上学期期中数学试题江苏省南通市平潮高中2020-2021学年高三上学期11月学情检测数学试题浙江省金华市磐安县第二中学2020届高三下学期返校检测试数学试题(已下线)理科数学-2021年高考押题预测卷(新课标Ⅰ卷)03安徽省滁州市定远县民族中学2021届高三下学期5月模拟检测理科数学试题山东省青岛市青岛第五十八中学2021-2022学年高三上学期期中数学试题广东省广州四中2022届高三下学期4月月考数学试题福建省莆田市第五中学2023届高三上学期12月月考数学试题重庆市2024届高三上学期8月月度质量检测数学试题江西省宜春市丰城市第九中学2024届高三(28班)上学期开学考试数学试题(已下线)专题15 立体几何解答题全归类(练习)云南省临沧市民族中学2022-2023学年高二上学期期中数学试题辽宁省大连市第八中学2023-2024学年高二上学期10月月考数学试题广东省广州市第十六中学2023-2024学年高二上学期期中数学试题黑龙江省绥化市哈师大青冈实验中学2023-2024学年高二上学期期中数学试题(已下线)专题03 空间向量求角度与距离10种题型归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)(已下线)专题06 二面角4种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)
解题方法
7 . 已知函数
,其中
为常数.
(1)判断
的奇偶性,并说明理由;
(2)若在
上存在![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
个不同的点
(
),满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94eba026ab9188e4deaef4f24f67769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8050bd480227fa5a97d64e74ae97518.png)
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7239984ac3f00112921239e1dd3313c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5432187d1c042787433b7633292d00fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80be0c3c50d2bd6230b53fbd056122df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5867fde790c54e6a931c5d1d22b049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94eba026ab9188e4deaef4f24f67769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8050bd480227fa5a97d64e74ae97518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dab458f8442e7cf674f6de24ab07c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
8 . 已知函数
(
自然对数的底数)有两个零点.
(1)求实数
的取值范围;
(2)若
的两个零点分别为
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e29195d6aa7d730230fab62b66c3a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd143a57a268a5a8ef486e2a4d5c0a.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/c5aee4ae5e9dc576e565a899609c8159.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数
(
为自然对数的底数,
为常数,且
).
(1)当
时,求函数
在区间
上的最值;
(2)若
在
上存在单调递减区间,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd7f49b69623400db8c56dc98f1204b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497199a00f177af4c593e0e715be97f1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
10 . 已知函数
,
.
(1)当
时,求函数
的图象在点
处的切线方程;
(2)求函数
的极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2701429b42a3c546abfcfa8a6511d5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次