解题方法
1 . 对于任意实数
,引入记号
表示算式
,即
,称记号
为二阶行列式.
是上述行列式的展开式,其计算的结果叫做行列式的值.
(1)求下列行列式的值:
①
;②
;
(2)求证:向量
与向量
共线的充要条件是
;
(3)讨论关于
的二元一次方程组
有唯一解的条件,并求出解.(结果用二阶行列式的记号表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5440a1b5d9338efd6976a56432e100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f9683760df4268272525c8082c7ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c8894e0b37af5da23a1c1bffb32017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5440a1b5d9338efd6976a56432e100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f9683760df4268272525c8082c7ee5.png)
(1)求下列行列式的值:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c601a13b26ec4fe000e79cf189d9bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c5a0d1545e308e320a49e1c305ea90.png)
(2)求证:向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ef9b43b03c19f5616e31888f053915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2502935b71dab102edbe6f162046943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9069422cc832b478cd86186e5f22897.png)
(3)讨论关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f334249bbad594a5db5137164b79f1d.png)
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解题方法
2 . 已知函数
,证明:
在区间
上单调递增的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f67ebe3b975f0b846a38a76eff0dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2952239f733e7978b2abb3c20fafcf47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aacce9a2647b42f0c4cc10020950573.png)
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名校
解题方法
3 . 已知函数
(
,且
)在
上的最大值比最小值大2.
(1)求
的值;
(2)设函数
,求证:
为奇函数的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d76ee3b131ecd6aa1aacf7fb7b3eb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954ad91827f930515da603a1255cab2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
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4 . 已知集合
,对于集合
的非空子集
,若
中存在三个互不相同的元素
,使得
均属于
,则称集合
是集合
的“期待子集”.
(1)试判断集合
是否为集合
的“期待子集”;(直接写出答案,不必说明理由)
(2)如果一个集合中含有三个元素
,同时满足①
,②
,③
为偶数.那么称该集合具有性质
.对于集合
的非空子集
,证明:集合
是集合
的“期待子集”的充要条件是集合
具有性质
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b50880bcd3d3028504da90000fbb99cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60809c809060f8d3f7a2d13b4baf6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)试判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a1a38223e9b67bcde177697bac40f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
(2)如果一个集合中含有三个元素
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d561cdf17d3a6d7d57af719cb6100c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55de080a3c1313bbd6ea5c17307c723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解题方法
5 . 已知函数
的定义域为A,集合
,
.
(1)求
;
(2)若
是
的充分条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbf3b5d63d006d9d1b23168b3d8d259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982184c9a52ce173dd69b30d8b954ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b458b0a6c01667c89e84f92b079a546a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55b98d426c776e11f02be37f7158b7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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2023-11-24更新
|
554次组卷
|
7卷引用:湖北省孝感市大悟一中等学校2023-2024学年高一上学期11月期中联考数学试题
湖北省孝感市大悟一中等学校2023-2024学年高一上学期11月期中联考数学试题湖北省孝感市大悟县第一中学等学校2023-2024学年高一上学期期中考试数学试卷湖北省咸宁市崇阳县第一中学2023-2024学年高一上学期12月月考数学试题江苏省盐城市东台市2023-2024学年高一上学期阶段联测数学试题江苏省十所名校2023-2024学年高一上学期12月阶段联测数学试题(已下线)专题03 函数的概念与幂函数2-期末复习重难培优与单元检测(人教A版2019)(已下线)专题03 函数的概念与幂函数1 -期末复习重难培优与单元检测(人教A版2019)
名校
解题方法
6 . 已知
是实数,且满足
,证明下列命题:
(1)“
”是“
”的充要条件;
(2)“
”是“
”的充分条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7191888571b035030e43e1ff327117b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c33ac81a1325ac63e1c01968f35773be.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443f04296cad09431991ebdb23034c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac83c4567e80668310da59a64e0478a.png)
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2023-11-22更新
|
128次组卷
|
3卷引用:安徽省阜阳市临泉第一中学等鼎尖教育2023-2024学年高一上学期11月联考数学试题
安徽省阜阳市临泉第一中学等鼎尖教育2023-2024学年高一上学期11月联考数学试题重庆市部分学校2023-2024学年高一上学期期中数学试题(已下线)1.2常见逻辑用语(高三一轮)【同步课时提升卷】
名校
7 . 求证:
是
是等边三角形的充要条件.(这里
,
,
是
的三边边长).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693c547eb0641dcf42d41c596bb2f4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
8 . 已知
.
(1)若
且
在
上单调递减,求
的取值范围;
(2)函数
的图象关于点
成中心对称图形的充要条件是函数
为奇函数.当
时,求
的对称中心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0edc1f271d16494975e7dbb1ab54908.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebfcaeeb24355282d5965f08bbdd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493cfdfd3079bb72a3676a37b2244509.png)
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9 . (1)已知命题
,当命题
为假命题时,求实数
的取值范围;
(2)已知
,
是实数,求证:
成立的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebf33773cad5d4d7cd9f8b67ca1bb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1f64033df8397ed5f5c684e27664bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88592d9e21b5201fe1c5f39bf240845e.png)
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10 . 高一的珍珍阅读课外书籍时,发现笛卡尔积是代数和图论中一个很重要的课题.对于非空数集A,B,定义
且
,将
称为“A与B的笛卡尔积”
(1)若
,
,求
和
;
(2)试证明:“
”是“
”的充要条件;
(3)若集合
是有限集,将集合
的元素个数记为
.已知
,且存在实数
满足
对任意
恒成立.求
的取值范围,并指明当
取到最值时
和
满足的关系式及
应满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e83ae6d18a3a3f1383a2c857ed0054a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf8be42fdd0b30c8a100c4110d434ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e37e656d05244fe3a5769cd1446725.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc03ec3d78487844b44cd273efc9188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f808f81b6ea9da53d51c549be04f4267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e37e656d05244fe3a5769cd1446725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1ea7aabd373ab4e84031b84936e70.png)
(2)试证明:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ec4a0fcae6ea3ad50754038379bf52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98816a922b6dd4704b3f95adc77cb7b.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec8996421ea2bdb85b9f29c714d6a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bcce23cde0e66aa6b2877cb49541d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed82f14b30abdb31af23beb3a6af8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f29c06a3e9a73e905eb87d71efa201c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223df28e586d0f67cdb8b675cec0a59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ac94bced60536f5595d1ffecf875ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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