名校
解题方法
1 . 已知椭圆
的离心率为
,且过点
.
(1)求椭圆方程;
(2)设不过原点
的直线
,与该椭圆交于
两点,直线
的斜率依次为
,满足
,试问:当
变化时,
是否为定值?若是,求出此定值,并证明你的结论;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1754ce56c726b9eea858411cca46b488.png)
(1)求椭圆方程;
(2)设不过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becdcb8a871e8965853acf0687034c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139c0ae68e597571ba72ef727fa9222c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8c3611bc5181eccb83e93c19831ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d7b4bb12628d5ed455d814b8aafa1f.png)
您最近一年使用:0次
2022-02-25更新
|
576次组卷
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16卷引用:【校级联考】青海省西宁市第四高级中学、第五中学、第十四中学三校2019届高三4月联考数学(文)试题
【校级联考】青海省西宁市第四高级中学、第五中学、第十四中学三校2019届高三4月联考数学(文)试题青海省西宁市2024届高三上学期期末联考数学(文)试题2016届辽宁省五校协作体高三上学期期初考试理科数学试卷2016届辽宁省五校协作体高三上学期期初考试文科数学试卷2015-2016学年河北省广平县一中高二上学期第四次月考理科数学试卷2016届宁夏六盘山高级中学高三五模考试数学(理)试卷辽宁省凌源市2017-2018学年高二上学期期末考试数学(理)试题【全国百强校】江西省南昌市第二中学2018-2019学年高二下学期第一次月考数学(理)试题宁夏六盘山高级中学2019届高三下学期第二次模拟考试数学(理)试题陕西省商洛市商丹高新学校2019-2020学年高二下学期4月学情质量检测数学(文)试题四川省泸州市泸县第一中学2021-2022学年高二下学期入学考试数学(文)试题四川省泸州市泸县第一中学2021-2022学年高二下学期入学考试数学(理)试题四川省宜宾市叙州区第一中学校2021-2022学年高二下学期期中考试文科数学试题四川省宜宾市叙州区第一中学校2021-2022学年高二下学期期中考试理科数学试题四川省凉山州冕宁中学2022-2023学年高二上学期12月月考数学试题河南省焦作市博爱县第一中学2024届高三下学期第二次模拟考试数学试题
2 . 如图,已知双曲线
,过
向双曲线
作两条切线,切点分别为
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/ecb20051-2b91-4c97-9bd8-5800eec92b84.png?resizew=206)
(1)证明:直线
的方程为
.
(2)设
为双曲线
的左焦点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d750ac23802aa73c47a1528227207485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a9d9d11c4aff0ff6def84811c07f06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/ecb20051-2b91-4c97-9bd8-5800eec92b84.png?resizew=206)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e86c6aaaf80865f372891d92a2b7a5b.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf2fee66accf33325bc1e2f940f8916.png)
您最近一年使用:0次
2022-01-24更新
|
2651次组卷
|
12卷引用:青海省海东市2022届高考一模数学(理)试题
青海省海东市2022届高考一模数学(理)试题广东省湛江市2021-2022学年高二上学期期末数学试题山东省部分学校联考(烟台市第二中学等校)2021-2022学年高三上学期阶段质量检测数学试题贵州省遵义市2021-2022学年高二上学期期末考试数学(理)试题河北省石家庄市行唐县2022届高三上学期期末数学试题河北省邯郸市十校联考2022届高三上学期期末数学试题(已下线)专题14 圆锥曲线切线方程 微点3 圆锥曲线切线方程综合训练河北省秦皇岛市青龙满族自治县实验中学2023届高三上学期期末数学试题(已下线)高二上学期期末【常考60题考点专练】(选修一+选修二)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)安徽省滁州市定远县民族中学2022-2023学年高二上学期期末数学试题(已下线)考点20 常用的二级结论的应用 2024届高考数学考点总动员(已下线)大招15直线夹角的计算方法
名校
3 . 如图,在四棱锥
中,
.
![](https://img.xkw.com/dksih/QBM/2021/12/9/2868710779445248/2868937883131904/STEM/5036e9baac5149339120b1a6932fad3e.png?resizew=170)
(1)证明:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e401bafda83fe0b39cac13bf36d4533.png)
![](https://img.xkw.com/dksih/QBM/2021/12/9/2868710779445248/2868937883131904/STEM/5036e9baac5149339120b1a6932fad3e.png?resizew=170)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5ea309886e947ea7cb4b81716206fd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
2021-12-09更新
|
414次组卷
|
5卷引用:青海省西宁市大通回族土族自治县2022届高三第一次模拟考试数学(理科)试题
解题方法
4 . 椭圆
的左、右焦点分别为
、
,焦点
、
和原点
将椭圆
的长轴恰好四等分,点
在椭圆
上.
(1)求椭圆
的标准方程;
(2)过左焦点
的直线
与椭圆
交于
,
两点,点
在
轴上且在焦点
的右侧,若始终保持线段
的长度是线段
的长度的4倍,证明:线段
与线段
的长度相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f9a28106d3e62bdaa5056648695056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过左焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
解题方法
5 . 如图,在四棱锥
中,
是等边三角形,底面
是棱长为2的菱形,O是
的中点,
与
全等.
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718625981415424/2719970503589888/STEM/6a4a00ea-131c-4754-9466-74edc74b4076.png?resizew=263)
(1)证明:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e219878be67a3a6790a26636715c003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718625981415424/2719970503589888/STEM/6a4a00ea-131c-4754-9466-74edc74b4076.png?resizew=263)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
2021-05-13更新
|
884次组卷
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2卷引用:青海省西宁市大通回族土族自治县2021届高三二模数学(理)试题
6 . 已知在三棱柱
中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/3/23/2683899342897152/2684027575746560/STEM/ed1db9d67bbc46949b7f878b4b9789c5.png?resizew=265)
(1)证明:
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1515a445310d259a080d02e16c2e58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446091491fb55549972f35a206fcab1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cda9901c8fde86582676213050285c0.png)
![](https://img.xkw.com/dksih/QBM/2021/3/23/2683899342897152/2684027575746560/STEM/ed1db9d67bbc46949b7f878b4b9789c5.png?resizew=265)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f9204cf305d94a6d9592cb1b39b011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5cbb31d457451479eb9d50954a75d1.png)
您最近一年使用:0次
2021-03-23更新
|
718次组卷
|
2卷引用:青海省西宁市大通回族土族自治县2021届高三一模拟考试数学(理)试题
名校
7 . 如图,菱形
的对角线
与
交于点
,
,
,将
沿
折到
的位置使得
.
![](https://img.xkw.com/dksih/QBM/2020/12/20/2618503122452480/2620245407645696/STEM/0b073e75-d8e2-4a6a-b56b-2135a073ff76.png)
(1)证明:
.
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fc6a5e71fa379d613ac1ef1cdf1048.png)
![](https://img.xkw.com/dksih/QBM/2020/12/20/2618503122452480/2620245407645696/STEM/0b073e75-d8e2-4a6a-b56b-2135a073ff76.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2020-12-23更新
|
1412次组卷
|
10卷引用:青海省海东市2021届高三上学期第二次模拟考试数学(理)试题
青海省海东市2021届高三上学期第二次模拟考试数学(理)试题陕西省部分重点高中2020-2021学年高三上学期12月联考理科数学试题贵州省贵阳市、黔东南州部分重点高中2021届高三年级联合考试数学(理科)试题河北省2021届高三上学期12月月考数学试题湖南省联合体2020-2021学年高三上学期12月联考数学试题山东省日照市2021届高三下学期一模数学试题广东省梅州市蕉岭中学等三校2020-2021学年高二下学期联考数学试题甘肃省天水市第一中学2020-2021学年高三第八次模拟数学(理)试题江苏省常州市前黄高级中学2021-2022学年高三上学期期初数学试题湖湘名校教育联合体2022-2023学年高三上学期9月大联考数学试题
解题方法
8 . 已知圆
,动圆P与圆M外切,且与直线
相切.
(1)求动圆圆心P的轨迹C的方程.
(2)若直线
与曲线C交于A,B两点,分别过A,B作曲线C的切线,交于点Q.证明:Q在一定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3935dafafc5f643540f7dc493073af85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
(1)求动圆圆心P的轨迹C的方程.
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
您最近一年使用:0次
2020-12-06更新
|
1124次组卷
|
9卷引用:青海省海东市2020-2021学年高三上学期第一次模拟考试数学(文)试题
青海省海东市2020-2021学年高三上学期第一次模拟考试数学(文)试题湖南省部分重点学校2020-2021学年高二上学期12月联考数学试题云南省楚雄州2021届高三上学期期中教学质量检测数学(文)试题云南省楚雄州2021届高三上学期期中教学质量检测数学(理)试题(已下线)热点09 解析几何-2021年高考数学(文)【热点·重点·难点】专练湖南省三湘名校联盟2020-2021学年高二上学期12月联考数学试题陕西省商洛市2020-2021学年高三上学期期末文科数学试题(已下线)专题21 抛物线综合-2020年高考数学母题题源全揭秘(浙江专版)贵州省义龙新区2021届高三上学期末考试数学(文)试题
9 . 如图,在三棱台
中,平面
平面
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
.
(1)证明:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7d82423b6f211a7ac51a850b55e73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d3f5f4c4419913c1232b7aae03ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bdcd23d2c26d9df0b4756d8a715673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/b826cceb-cf2d-4c7a-b9d8-c9a86f1ffef0.png?resizew=182)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4d128ad2bab1ff3a2778d0028a7abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d3f5f4c4419913c1232b7aae03ade.png)
您最近一年使用:0次
2020-09-20更新
|
758次组卷
|
3卷引用:青海省2022届高三第四次模拟考试理科数学试题
青海省2022届高三第四次模拟考试理科数学试题浙江省“七彩阳光”新高考研究联盟2020-2021学年高三上学期返校联考数学试题(已下线)第35讲 利用传统方法解决立体几何中的角度与距离问题-2022年新高考数学二轮专题突破精练
名校
10 . 如图,
为圆锥的顶点,
为底面圆心,点
,
在底面圆周上,且
,点
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/6eac220e-36d5-4924-8579-2cb8998cc878.png?resizew=141)
求证:
;
若圆锥的底面半径为
,高为
,求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/6eac220e-36d5-4924-8579-2cb8998cc878.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/464e16e3387532eb66521b4e97791cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97fa483ce5e3575ff399722caba7b943.png)
您最近一年使用:0次
2020-09-22更新
|
1467次组卷
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7卷引用:青海省西宁市2022届高三二模数学(理)试题