1 . 如图,点
是曲线
上的任意一点,
,
,射线
交曲线
于
点,
垂直于直线
,垂足为点
.则下列判断:①
为定值
;②
为定值5.其中正确的说法是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/60edb08e-5d5c-4687-8920-162fac037a19.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2049e67012cc849c6a55d40dbed50d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0af1a9647a129a692715564967a8ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b378e03d75c73c8ca71f991a8c07729a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce21531a886c50568b75fd4278f15dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca909e0bfdc0a931b1969115e5c524a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb18ca54d4b25ddae3a613d91b20d551.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/60edb08e-5d5c-4687-8920-162fac037a19.png?resizew=199)
A.①②都正确 | B.①②都错误 |
C.①正确,②错误 | D.①都错误,②正确 |
您最近一年使用:0次
2020-07-14更新
|
602次组卷
|
5卷引用:上海市徐汇区2019-2020学年高二下学期期末数学试题
上海市徐汇区2019-2020学年高二下学期期末数学试题(已下线)专题5.4 期末考前必做30题(选择题提升版)-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)3.3 抛物线-2021-2022学年高二数学同步精品课堂讲+例+测(苏教版2019选择性必修第一册)(已下线)3.3 抛物线沪教版(2020) 选修第一册 同步跟踪练习 期中测试卷
2 . 以下几种说法
①命题“
,函数
只有一个零点”为真命题
②命题“已知
,
,若
,则
或
”是真命题
③“
在
,
恒成立”等价于“对于
,
,有
”
④
的内角
,
,
的对边分别为
,
,
,则“
”是“
”的充要条件.
其中说法正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c9043ff925c1fb693afd1516dbcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12e04dcaf2cde31b57e86a3b41f471.png)
②命题“已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34982de5d3f287cd570ea30eb46d185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be861d83cddb5fc8aa22f7f0f9415d6.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89286660f11247d3d5f47507081ddd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45340678c2ec1bc8cd68c0a3a2ab8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45340678c2ec1bc8cd68c0a3a2ab8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429989ce49589ba3d7b76a8809b5234.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b6662c6f84e1c97c9d05d9ae62c1eb.png)
其中说法正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
3 . 以下几种说法
①命题“
,函数
只有一个零点”为真命题
②命题“已知
,
,若
,则
或
”是真命题
③“
在
恒成立”等价于“对于
,有
”
④
的内角
,
,
的对边分别为
,
,
,则“
”是“
”的充要条件.
其中说法正确的序号为( )
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c9043ff925c1fb693afd1516dbcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12e04dcaf2cde31b57e86a3b41f471.png)
②命题“已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34982de5d3f287cd570ea30eb46d185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be861d83cddb5fc8aa22f7f0f9415d6.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e871c54f8021e1f0da4d552e38d8814f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02a486133c2f49aa028e8b13fb40b05.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048efda6ae51eb780e95ed3505b7be04.png)
其中说法正确的序号为( )
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
名校
4 . 下列叙述中正确的是
A.命题“若![]() ![]() ![]() ![]() |
B.命题“![]() ![]() ![]() ![]() |
C.“![]() ![]() |
D.正弦函数是奇函数,![]() ![]() |
您最近一年使用:0次
名校
5 . 关于曲线
,有如下结论:
①曲线
关于原点对称;
②曲线
关于直线
对称;
③曲线
是封闭图形,且封闭图形的面积大于
;
④曲线
不是封闭图形,且它与圆
无公共点;
⑤曲线
与曲线
有4个交点,这4点构成正方形;
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eda389249f92eaba886f7c67e05e89.png)
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421e012e863cd15eea1a174cd0679c2e.png)
③曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
④曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
⑤曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f831661fc06b97d143f8e35710c7883c.png)
其中所有正确结论的序号为( )
A.①②③⑤ | B.①②④⑤ | C.①②③④ | D.①②③④⑤ |
您最近一年使用:0次
2020-11-13更新
|
221次组卷
|
3卷引用:上海市进才中学2020-2021学年高二上学期期中数学试题
上海市进才中学2020-2021学年高二上学期期中数学试题山西省朔州市怀仁县大地学校2020-2021学年高二上学期第三次月考理科数学试题(已下线)高二期末押题02-2020-2021学年高二数学下学期期末专项复习(沪教版)
解题方法
6 . 已知
分别为双曲线
的左、右焦点,
为双曲线右支上异于顶点的任意一点,
内切圆的圆心为
,现有下列结论:
①
内切圆的圆心必在直线
上;
②
内切圆的圆心必在直线
上;
③双曲线
的离心率等于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72924beaf912fd383e44535545cc6d8c.png)
④双曲线
的离心率等于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae3cb0ebefc1b2fb9802b00e7e0bca5.png)
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b334dafda377c3db77647c8cf1e95f.png)
③双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72924beaf912fd383e44535545cc6d8c.png)
④双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae3cb0ebefc1b2fb9802b00e7e0bca5.png)
其中所有正确结论的序号为( )
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
2021-01-01更新
|
154次组卷
|
2卷引用:河南省名校联盟2020-2021学年高二上学期12月联合考试数学(理)试题
7 . 给出以下命题:
(1)若数列
存在极限,则该极限唯一;
(2)若直线
的倾斜角为
,则
的斜率存在且为
;
(3)设向量
与
的夹角为
,若
,则
为锐角;
(4)到
轴、
轴距离相等的点的轨迹方程为
.
其中所有正确命题的序号为
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(3)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1e552a1451270703a86e592d7dd656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(4)到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54934d97f4087dfaf4302ea3914a9632.png)
其中所有正确命题的序号为
A.(1)(2) | B.(2)(3) | C.(1)(4) | D.(2)(4) |
您最近一年使用:0次
解题方法
8 . 已知三棱锥
中,
,
,
,
.关于该三棱锥有以下结论:①三棱锥
的表面积为
;②三棱锥
的内切球的半径
;③点
到平面
的距离为
;④若侧面
内的动点
到平面
的距离为
,且
,则动点
的轨迹为抛物线的一部分.其中正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b8e7befcb7881c294070175b1a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00c750e915d7f9a7460970a4199071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641d01140939c44450bf39773272af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa37aefb6d45efe4e20ba48c2e7dfa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c966fa765420ae547f83e28dcc997a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266e095e1f7a31646992a5b7fac251d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.①② | B.③④ | C.① ②③ | D.①②③④ |
您最近一年使用:0次
9 . 已知方程
表示的曲线为
的图象,对于函数
有如下结论:①
在
上单调递减;②函数
至少存在一个零点;③
的最大值为
;④若函数
和
图象关于原点对称,则
由方程
所确定;则正确命题序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663e44da386d2ec788ab2843a0fa6081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28260530b69b5cf616608d9d2a2d3951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cb57eaef0982874cbf9d87bfaea05d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae20e2bfcc752c07a7ce6614b0b1a03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246571c22e1aec67fdc7fc12e21c3113.png)
A.①③ | B.②③ | C.①④ | D.②④ |
您最近一年使用:0次
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10 . 历史上,许多人研究过圆锥的截口曲线.如图,在圆锥中,母线与旋转轴夹角为
,现有一截面与圆锥的一条母线垂直,与旋转轴的交点
到圆锥顶点
的距离为
,对于所得截口曲线给出如下命题:
①曲线形状为椭圆;
②点
为该曲线上任意两点最长距离的三等分点;
③该曲线上任意两点间的最长距离为
,最短距离为
;
④该曲线的离心率为
.其中正确命题的序号为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/8bbb22a4-8c3f-49fd-b3cf-cf5375c6fc4e.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
①曲线形状为椭圆;
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
③该曲线上任意两点间的最长距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b87ecc72d8130ea6b4fe0512837345b.png)
④该曲线的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/8bbb22a4-8c3f-49fd-b3cf-cf5375c6fc4e.png?resizew=153)
A.①②④ | B.①②③④ | C.①②③ | D.①④ |
您最近一年使用:0次
2019-05-05更新
|
646次组卷
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