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1 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee45b16aba1663e8069a5ebee81d31bb.png)
A.![]() |
B.![]() |
C.点![]() ![]() |
D.直线![]() ![]() |
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2023-02-05更新
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477次组卷
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3卷引用:河北省唐山市开滦第一中学2022-2023学年高三上学期11月期中考试数学试题
河北省唐山市开滦第一中学2022-2023学年高三上学期11月期中考试数学试题甘肃省武威市凉州区2022-2023学年高二下学期期中考试数学试题(已下线)2024年新课标全国Ⅱ卷数学真题平行卷(基础)
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解题方法
2 . 在
中,角
所对的边长分别为
,面积为
,且
.
(1)求角
的大小.
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e30c0a5c92f50dce1f7624709950ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bef6e3ff798f1a0893971220c347914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61407147f1329c96554fc8508232f1c.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd950ec83d93596468e3aff0bb91e0e9.png)
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2023-02-05更新
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785次组卷
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4卷引用:河北省唐山市开滦第一中学2022-2023学年高三上学期11月期中考试数学试题
河北省唐山市开滦第一中学2022-2023学年高三上学期11月期中考试数学试题河北省唐县第一中学2022-2023学年高一下学期3月月考数学试题(已下线)山东省济南市2022届高三二模数学试题变式题17-22(已下线)微专题07 三角形中的范围与最值问题(2)-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)
22-23高三上·江西南昌·阶段练习
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解题方法
3 . 已知A,B均为抛物线C1:
上的点,F为C的焦点,
.则直线AB的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca90f16ecfcbe661326cdf76838af936.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-05更新
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170次组卷
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6卷引用:河北省沧衡八校联盟2022-2023学年高三上学期11月期中考试数学试题
河北省沧衡八校联盟2022-2023学年高三上学期11月期中考试数学试题(已下线)江西省南昌市金太阳大联考2023届高三上学期10月联考数学(理)试题(已下线)第03讲 抛物线(练)青海省海东市2022-2023学年高三上学期12月第一次模拟数学(文)试题天津市梧桐中学2022-2023学年高三上学期期末数学试题湖南省衡阳市衡阳县第二中学2023-2024学年高二上学期期末达标测试数学试题(B卷)
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4 . 下列命题是真命题的是( )
A.![]() ![]() |
B.存在![]() ![]() |
C.![]() ![]() |
D.若![]() ![]() ![]() |
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解题方法
5 . 若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d63c534f2dbe6d6aff830c34c9e45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed64481546da8c67c00b658de70c818b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6035b02d55586502963ee000d4a52958.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知向量
,
,若
,则m=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e258bfd6a61b8b1b75668526654863a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f99645c5aa5800b219c4d9f0baebcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7f195460d83808c2641485e4b04738.png)
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7 . 黎曼函数R(x)是一个特殊函数,由德国数学家黎曼发现并提出,该函数定义在[0,1]上.当
(p,q都是正整数,
为最简真分数)时,
,当
或1或x为(0,1)内的无理数时,
.若
为偶函数,
为奇函数,当
时
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78670f8bfe3c43f69f205b4035cc5b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507c062709cfe2f218896247461c7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35888de80226a81c4c80fecb8f4a9337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df21bcb07cb594d6614230b2317942f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb5e3c82f6a63eff281d22c5dce3717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cff564039c36a3fb2d8a4e3c34f1bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6774290661f2b9b647a56fedb12ea709.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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8 . 已知函数
(c为整数),若
,则
的值不可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a333c46dcc22b9a6c6f45fa7c5078c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42350b77d3bb789d9992c81621d82c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6666fba1dd4b7081ee802f4ff1120a.png)
A.![]() | B.0 | C.1 | D.5 |
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9 . 如图,在四边形ABCD中,
,
,点E为线段AD上的一点. 现将
沿线段EC翻折到PEC(点D与点P重合),使得平面PAC
平面ABCE,连接PA、PB.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/3d37c7ff-62a9-4f75-997b-61de20791a0e.png?resizew=162)
(1)证明:
平面
;
(2)若
,且点E为线段AD的中点,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5441d73845911db1993bf903c4d8700f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4049e8a64418e6a939a7d73e7e78c2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/3d37c7ff-62a9-4f75-997b-61de20791a0e.png?resizew=162)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
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解题方法
10 . 如图,四边形
为正方形,以
为折痕把
折起,使点
到达点
的位置,且二面角
为直二面角,
为棱
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/30b0d9dd-2c6f-4898-a28b-3292991be3c5.png?resizew=236)
(1)求直线
与
所成角;
(2)当
为何值时,平面
与平面
夹角的余弦值为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba0dd982b283611f4d01be499546af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/30b0d9dd-2c6f-4898-a28b-3292991be3c5.png?resizew=236)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4a0d511365abd9df144a412ccd4615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d74ef32584586ec4857acd0a3f4fe9.png)
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