名校
解题方法
1 . 如图,矩形
中,
,
为边
的中点,将
沿直线
翻折至
的位置.若
为线段
的中点,在
翻折过程中(
平面
),给出以下结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/75579b14-d042-4f3f-94ed-2310a0e41d23.png?resizew=198)
①存在
,使
;
②三棱锥
体积最大值为
;
③直线
平面
.
则其中正确结论的序号为_________ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8588e18e27bfebf7c81c7e3c7efb1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/75579b14-d042-4f3f-94ed-2310a0e41d23.png?resizew=198)
①存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2181c78134c310f746eab44b9124e63b.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb79f948d408ab4fb6708bde172c5e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b9f96b8ecc3cb000bb2f030809f225.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c70966a318ef8ecf874257f5c5e5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
则其中正确结论的序号为
您最近一年使用:0次
2023-03-13更新
|
366次组卷
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3卷引用:河南省许昌市鄢陵县职业教育中心(升学班)2022-2023学年高二下学期期中考试数学试题
河南省许昌市鄢陵县职业教育中心(升学班)2022-2023学年高二下学期期中考试数学试题宁夏六盘山高级中学2023届高三第一次模拟数学(文)试题(已下线)第15讲 8.6.3平面与平面垂直(第2课时)-【帮课堂】(人教A版2019必修第二册)
名校
2 . 对于函数
.现有下列结论:①任取
,
,都有
;②函数
有3个零点;③函数
在
上单调递增;④若关于
的方程
有且只有两个不同的实根
,
,则
.其中正确结论的序号为______ .(写出所有正确命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b488ea4070e2c7f27a5a3fcb7c7c8138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c50d84d051a6e770d1eeefcdcd58b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8c69aaecfbe4d8bd7cf01a3b79c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2419b1e277ee683ac59e59289109bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd2993f6583edb4693a760f3f276a66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b647bef81d6e219c508eca1517d9342.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/ecc2660c57e0cb6f907f49ae35677113.png)
您最近一年使用:0次
2020-06-16更新
|
1468次组卷
|
6卷引用:河南省郑州市第一中学2019-2020学年高一下期线上线下教学衔接检测数学试题
名校
3 .
和
的散点图如图所示,则下列说法中所有正确命题的序号为______ .
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485424677470208/2485907477217280/STEM/2f1870cd5f0542e2b526d4fafe82d4ad.png?resizew=266)
①
,
是负相关关系;
②
,
之间不能建立线性回归方程;
③在该相关关系中,若用
拟合时的相关指数为
,用
拟合时的相关指数为
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485424677470208/2485907477217280/STEM/2f1870cd5f0542e2b526d4fafe82d4ad.png?resizew=266)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
③在该相关关系中,若用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62450b8901f13940cb8f68905b5a45ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5166e632556a50699ebbd20a186476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929ef3bed0a4bdd22f39e036506dc481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b52f62a3b92c9f562b92c9ca2f5f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafe6061a9a291b57d646485eea4c4bb.png)
您最近一年使用:0次
2020-06-16更新
|
1237次组卷
|
7卷引用:河南省郑州市第一中学2019-2020学年高二下期线上线下教学衔接检测数学(文)试题
河南省郑州市第一中学2019-2020学年高二下期线上线下教学衔接检测数学(文)试题(已下线)第四章复习与小结A基础练(已下线)专题09 统计- 备战2021年新高考数学纠错笔记(已下线)【新教材精创】第八章 成对数据的统计分析 -A基础练(已下线)第48讲 统计案例-2022年新高考数学二轮专题突破精练(已下线)第03讲 成对数据的统计分析 (精练)(已下线)8.1.1 变量的相关关系(分层作业)-【上好课】2022-2023学年高二数学同步备课系列(人教A版2019选修第三册)
2010·辽宁·一模
解题方法
4 . 已知函数
是
上的偶函数,对任意
,都有
成立,当
且
时,都有
给出下列命题:
①
且
是函数
的一个周期;
②直线
是函数
的一条对称轴;
③函数
在
上是增函数;
④函数
在
上有四个零点.
其中正确命题的序号为_____ (把所有正确命题的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54a16fd78a5464d7944e374552ed80b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16014834857c7ad49afc420095b5239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee798d2d512f7342c55a0d580f4367e2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db7707d6b2754808adefc9b2fb976a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ffd26ee71de49bd8c5deba8f623159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041da7ce47a2aedda53953794fdbd3dc.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4695c34aafd1c1ae276f9eddc53a397d.png)
其中正确命题的序号为
您最近一年使用:0次
名校
解题方法
5 . 在下列结论中:
①函数
为奇函数;
②函数
的图象关于点
对称;
③函数
的图象的一条对称轴为
;
④若
,则
.
其中正确结论的序号为_________ (把所有正确结论的序号都 填上).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e605ae8ac8dea3edc2897bfdf64948df.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad5ea868bdfdac92ef9b95b83ea16d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bcbfdedebd580bf4babed86a066b77.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/062b8a37477e7dc326df0d5d586a6a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e2873983c6d5eb357a17382f92b9d2.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b1fa94dd2188e81d1d67773edca9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99cecf0b1a3d35670ed7e7c94c07d78b.png)
其中正确结论的序号为
您最近一年使用:0次
2017-07-10更新
|
659次组卷
|
4卷引用:2016-2017学年河南省八市高一下学期第一次联考文科数学试卷
6 . 已知函数
,
,
为
图象的一个对称中心.现给出以下四种说法:①
;②
;③函数
在区间
上单调递增;④函数
的最小正周期为
.则上述说法正确的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bb5b70e41a4ace7b016706b13bcece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c9168200e6089ab8b7c203078025e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84e2a02b32a01b13d65e5e9c4554c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce0dc28340738e090bd10d6d675d8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17969ef32066458222c0c74a4bb896b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
A.①④ | B.③④ | C.①②④ | D.①③④ |
您最近一年使用:0次
名校
解题方法
7 . 牛顿迭代法(Newton's method)又称牛顿–拉夫逊方法(Newton–Raphsonmethod),是牛顿在17世纪提出的一种近似求方程根的方法.如图,设
是
的根,选取
作为
初始近似值,过点
作曲线
的切线
,
与
轴的交点的横坐标
(
),称
是
的一次近似值,过点
作曲线
的切线,则该切线与
轴的交点的横坐标为
,称
是
的二次近似值.重复以上过程,直到
的近似值足够小,即把
作为
的近似解.设
,
,
,
,
构成数列
.对于下列结论:
(
);
②
(
);
③
;
④
(
).
其中正确结论的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ec28f6f007c118c4fb3dc2e0531ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015740ce0b7022cf0a5503747c020999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453cee2ac9dfd92e2edfa0b4c4004ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41800503c5e7a04a54819c596aa8fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12a4eecd249473a831d0ee472470240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27c0ab3e2d7698f082854bafe4174dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ec28f6f007c118c4fb3dc2e0531ca1.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69004a81950ee4b3a23dd3c0748be821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e2dc498840932eb1f8e359e4e3b931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac12f7f9467c2d446c2d83df051d6f85.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa385ab812298518070dff2a4b8057d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
其中正确结论的序号为
您最近一年使用:0次
2023-05-23更新
|
822次组卷
|
10卷引用:河南省郑州市2019-2020学年高二(下)期中数学(文科)试题
河南省郑州市2019-2020学年高二(下)期中数学(文科)试题河南省郑州市2019-2020学年高二下学期阶段性学业检测题(5月) 数学(文)试题2020届宁夏银川景博中学高三下学期第一次模拟数学(文)试题(已下线)学科网3月第一次在线大联考(新课标Ⅰ)数学(文科)试题(已下线)文科数学-学科网3月第一次在线大联考(新课标Ⅰ卷)(已下线)专题01 利用构造或猜想,解决数列递推问题 (第三篇)-2020高考数学压轴题命题区间探究与突破江西省萍乡市芦溪中学2022届高三上学期开学考试数学(理)试题(已下线)第三篇 数列、排列与组合 专题1 建立递推关系求通项公式 微点2 建立递推关系求通项公式综合训练(已下线)第01讲 导数的概念与运算(三大题型)(讲义)(已下线)【一题多变】零点估计 牛顿切线
解题方法
8 . 有以下结论:
①将函数
的图象向右平移1个单位得到
的图象;
②函数
与
的图象关于直线y=x对称
③对于函数
(
>0,且
),一定有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④函数
的图象恒在
轴上方.
其中正确结论的序号为_________ .
①将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d1c01919d7f1aa26d5594a334c0a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232671c1ab6f356e2334851d739d22fa.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7c4adef3485e8ac6e50d1926365327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2db3392f2498e867f188b06496ec087.png)
③对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d76ee3b131ecd6aa1aacf7fb7b3eb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f9679d8eeaf0bfe15d6a5e1addf99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
其中正确结论的序号为
您最近一年使用:0次
9 . 如图
的导函数的图象,现有四种说法:
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654580285440/1572654586265600/STEM/5fa7b244d4164ff9a060bb3a37691fed.png)
(1)
在
上是增函数;
(2)
是
的极小值点;
(3)
在
上是减函数,在
上是增函数;
(4)
是
的极小值点;以上正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654580285440/1572654586265600/STEM/5fa7b244d4164ff9a060bb3a37691fed.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0d9d78aa4b75eed4c4e7c5a80897f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405741735c6bfbbbfcb52ae03069b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0ff4fe45a85e9f13a758e3e7aff157.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
A.(1)(2) | B.(2)(3) | C.(3)(4) | D.(4) |
您最近一年使用:0次
10 . 下列结论:①
是
的充要条件;
②存在
,
,使得
;
③函数
的最小正周期为
;
④任意的锐角三角形
中,有
成立.
其中所有正确结论的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9beed0ccbc14b49c9f146e9f67b776c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2e33a93693ca2b7e2b15a31db5a694.png)
②存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ef778b8c90778644b6f34d2f851b0.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa35a7b967fbfd53b79078785eddd838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
④任意的锐角三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549169246fc4e6d5fe27fbcd8dede7d1.png)
其中所有正确结论的序号为
您最近一年使用:0次