1 . 已知数列
的通项公式
,设
,数列
的前
项和
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49da60ee8ea230b3a14750e64d3579f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5077d78da202ddef83b8a50ae1eb1e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30136113176ba7fe660e998d0873157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
解题方法
2 . 继淄博烧烤、哈尔滨冻梨后,最近天水麻辣烫又火了.据了解天水麻辣烫店内菜品一般由竹签串起成捆摆放,人们按照自己的喜好选好后递给老板,进行调制.某麻辣烫店内有西兰花、香菇、豆皮、海带、白菜等菜品,一游客打算从以上5种蔬菜中随机选择不同的3种,则西兰花和海带被选中的概率为___________ .
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解题方法
3 . 已知函数
.
(1)证明:
时,
恒成立;
(2)证明:
(
且
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4dd4be1e37768f832d1e9b9380e779.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6551d7315962759f2b0693b475fd9bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
您最近一年使用:0次
2024-04-30更新
|
1521次组卷
|
5卷引用:陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷
陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷陕西省汉中市2023-2024学年高三下学期教学质量第二次检测文科数学试卷(已下线)模块五 专题3 全真能力模拟3(人教B版高二期中研习)(已下线)专题1 数列不等式 与导数结合 讲(经典好题母题)(已下线)模块一 专题6 导数在不等式中的应用B提升卷(高二人教B版)
4 . 在直角坐标系
中,曲线
的方程为
(t为参数),以坐标原点为极点,x轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.已知曲线
与
交于相异的A,B两点.
(1)求
的极坐标方程及
的直角坐标方程;
(2)设点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d878d665b193f3b85457140f752161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bddf0b3db29426b5f1c396736b7f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc8057b074ab72aac23e47bd957c2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063f4f4ce1d9822e9d5144ca0fc83979.png)
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2024-04-28更新
|
571次组卷
|
3卷引用:陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷
陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷陕西省汉中市2023-2024学年高三下学期教学质量第二次检测文科数学试卷(已下线)2024年高考全国甲卷数学(理)真题平行卷(巩固)
5 . 已知数列
的前
项和为
,且
.
(1)证明数列
为等比数列,并求
的通项公式;
(2)在
和
之间插入
个数,使这
个数组成一个公差为
的等差数列,求数列
的前
项和
.
(3)若对于任意
,数列
的前
项和
恒成立,求实数
的取值范围.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e45948012eaadd05f96e8ba11a6b8b.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3468a665ac713ab7b400c672f19650a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0526bcbb60d5258b461ab634e913212d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.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/33591caf3f8bec653e47cd9b644ae9c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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6 . 在
中,角A,B,C所对的边分别为a,b,c,请从下列条件中选择一个条件作答:(注:如果选择条件①和条件②分别作答,按第一个解答计分.)
①记
的面积为S,且
;②已知
.
(1)求角A的大小;
(2)若
为锐角三角形,且
,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3965e8eb042f0a13aed53d763dd26b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7756450f52fd946813c29a19ad1df2e2.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39900a2d790732077ffb571427a134fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-04-23更新
|
1210次组卷
|
3卷引用:陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷
陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷陕西省汉中市2023-2024学年高三下学期教学质量第二次检测文科数学试卷(已下线)3.5 解三角形的应用(高考真题素材之十年高考)
解题方法
7 . 已知:如图,三角形
为正三角形,
和
都垂直于平面
,且
.
平面
;
(2)点
为
上靠近
的三等分点,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada923df654d1ec832896cb3e126a8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d243d9a135116a6749d586fd5b95ec73.png)
您最近一年使用:0次
8 . 已知
,直线
为l上的一动点,A,B为
上任意不重合的两点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6d232da26e718102ab4315a5d2f284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78e712ac088ab1694580e17e841f00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35031ade086c0cb5adcd82aaef62462.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-21更新
|
381次组卷
|
3卷引用:陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷
陕西省汉中市2023-2024学年高三下学期教学质量第二次检测理科数学试卷陕西省汉中市2023-2024学年高三下学期教学质量第二次检测文科数学试卷(已下线)【人教A版(2019)】高一下学期期末模拟测试A卷
9 . 已知函数
,
有4个零点,则m的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25954fd1b975467bbbbeee70fe97870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613554940b48197cfb677e1b8052c06d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 已知:如图,三角形
为正三角形,
和
都垂直于平面
,且
,
为
的中点.
平面
;
(2)求点B到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada923df654d1ec832896cb3e126a8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b5cfae407016cad45bbdefea05833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求点B到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
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