名校
1 . 如图,已知在
中,
,
是
边上一点,且
,将
沿
进行翻折,使得点
与点
重合,若点
在平面
上的射影在
内部及边界上,则在翻折过程中,动点
的轨迹长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4bb0cc36a05dda3725f4b3b03a7feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d78fc7fcb2762de28dcef8aa3aa0e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 露天电影就是在室外放的电影,在我国七十年代开始流行,观看者不需要买票,可以随意进场观看.已知某地在播放露天电影,幕布上、下边缘距离为d米,幕布的下方边缘距离观众水平视线上方a米,为使看电影时的视角(即从幕布上、下边缘引出的光线在人眼光心处所成的夹角)最大,应坐在距离幕布___________ 米处.(用a,d表示)
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3 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3529f0a1f3b4c201674801eb3ad2a114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53317f0d6f0df2e7f0bb053dd98813.png)
A.3 | B.![]() | C.![]() | D.2 |
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2024-04-06更新
|
831次组卷
|
8卷引用:江苏省南通市如皋市2024届高三上学期1月诊断测试数学试题
江苏省南通市如皋市2024届高三上学期1月诊断测试数学试题湖北省孝感市高级中学2024届高三上学期期末数学试题宁夏回族自治区银川一中2024届高三第二次模拟考试理科数学试题浙江省杭州师范大学附属中学2024届高三下学期高考适应性考试数学试卷山东省胶州市第一中学2023-2024学年高一下学期3月月考数学试题(已下线)模块二 专题4 三角恒等变换中策略问题(苏教版)(已下线)模块二专题4三角恒等变换中策略问题(高一下人教B版)(已下线)4.2 两角和与差的三角函数公式-同步精品课堂(北师大版2019必修第二册)
4 . 已知函数
,若
,
,且
在区间
上没有零点,则
的一个取值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0be242ebd0a16f073e90a4ad07cd33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95726814c1f815ec684787334c89c717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5aebe20397ea9441d0fcebfda55922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1f6c9ee34575e68747a98c75d4c266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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5 . 如图所示,已知椭圆
的左右焦点分别为
,点
在
上,点
在
轴上,
,则
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b0dadb875cccce870b69409a476606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea68f65429501ec4986bef9cce8dff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ade9ff1a02f622b86b36ffadfbfaae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/d4d339ca-022c-40ed-a36d-740d028ccdd3.png?resizew=170)
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2024-03-27更新
|
782次组卷
|
3卷引用:陕西省西安市第一中学2024届高三第十次模拟考试数学(文)试题
解题方法
6 . 已知函数
定义域为
,
,
,则下列命题正确的个数是( )
①若
,
,则函数
在
上是增函数
②若
,
,则函数
是奇函数
③若
,
,则函数
是周期函数
④若
,且
,
,则函数
在区间
上单调递增,函数
在区间
上单调递减
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c203d8dcd4f3470d5fdb7b92211e98c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739e90b9f86c4804e1f14fd74c0c0113.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a976d91358362fa49d6da8021fd47e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffdbad374128480c4f9ea0ece86621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354e0fcc5ce9a3446aeef0eb9a1d3c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da3a6d011679952771607b3a166676b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3293afe2c6518387d0b6b8234a0713d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848ac362f7f2aabc5ddda910fd30c731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3293afe2c6518387d0b6b8234a0713d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b885c72c3cf484dfea5046a13b098af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7993770944efc057b1b536da183087de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42f1bc4a3a1b478178f06d0d0c07acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d49400af8b2337858c3c4323004c29a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e016113a40eef2ef0ac690be9da8f181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e95c519658815e47e6ace216a42d34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e016113a40eef2ef0ac690be9da8f181.png)
A.3个 | B.2个 | C.1个 | D.0个 |
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7 . 若
是函数
的一个零点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c20f960eb0a90dd17e669244ff5e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff49a05331e84872c0a1e8709d23455b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30a9f93bd40684daf8c8c4cd9815d47.png)
A.5 | B.4 | C.3 | D.2 |
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2024-03-13更新
|
800次组卷
|
5卷引用:江苏省苏州市2024届高三上学期学业质量阳光指标调研数学试题
江苏省苏州市2024届高三上学期学业质量阳光指标调研数学试题(已下线)考点11 倍(半)角公式及其应用 --2024届高考数学考点总动员【练】2024届高三新高考改革数学适应性练习(4)(九省联考题型)湖南省湘潭市湘潭县第一中学2024届高三下学期2月月考数学试题广东省2024届高三新改革数学适应性训练六(九省联考题型)
8 . 已知椭圆
的左、右焦点分别为
为坐标原点,点
在
上,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be68669e8cde95b6f844477a2acfb1e3.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36813cb202ce58fe040236436b1d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447120a38d5e15d7a01d36231d648d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5918ee27201b342fab2009e7f9d12da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be68669e8cde95b6f844477a2acfb1e3.png)
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9 . 已知函数
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c36cdd14a31bf6e179037189b27109.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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10 . 已知
的内角A,B,C所对的边分别为a,b,c,
,
,角C为锐角,已知
的面积为
.
(1)求c;
(2)若
为
上的中线,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019eb94a6a2b38308811470d860e1a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2793aa39b517d1a5e7ca2d8243710c8f.png)
(1)求c;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
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