解题方法
1 . 下图是某市2016年至2022年生活垃圾无害化处理量y(单位:万吨)与年份t的散点图.
(2)建立y关于t的回归方程(系数精确到0.01),预测2024年该市生活垃圾无害化处理量.
参考数据:
,
,
,
.
参考公式:
,
;相关系数
.
(2)建立y关于t的回归方程(系数精确到0.01),预测2024年该市生活垃圾无害化处理量.
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3e6db46529684e4794703da135300a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf33a251e9a1f2875032f14c15a52ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb48f6ff4138a9b968d5b75fe777ff9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923557f74987174405af890c9a772c48.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877ef29971341d8c39cce750b51fb5f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a27ee2016a157f6a463e86fff92d73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a337578911e445bea5adf2dae2427ed0.png)
您最近一年使用:0次
解题方法
2 . 已知实数
满足约束条件
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24c81898be14753bea30a1ecda67af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0945e2b7fa4e521f9d07593f89b16d04.png)
您最近一年使用:0次
3 . 在三棱锥
中,侧面
是等边三角形,平面
平面
,
且
,则三棱锥
外接球的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 如图,在直三棱柱
中,
,M,N分别是
,
的中点,
.
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002c709e9fee8d477bddfe595cc760f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023cf6e8d7c5fb346cff654926839aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770b4f16694b2bd79a1a93d776a82680.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f06f938f4b64f78fcfc99cd655ca9dd.png)
您最近一年使用:0次
5 . 已知奇函数
的导函数为
,若当
时
,且
.则
的单调增区间为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94be9984077d5a2d3f3acbd347b6280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6e1d0db0980774b5c2d650bfc2dda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
6 . 在直角坐标系
中,已知曲线
(
为参数)和圆
.以坐标原点O为极点,以x轴的正半轴为极轴建立极坐标系.
(1)求曲线
和圆
的极坐标方程;
(2)设过点O倾斜角为
的直线l分别与曲线
和圆
交于点A,B(异于原点O),求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1197f603335750852fdebc52678a8177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800cc7f86ac1d6474e945a8a010336ef.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设过点O倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59374679c4db9444ec709835579ce4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7095891a1950617b3388a3b91de66ded.png)
您最近一年使用:0次
解题方法
7 . 已知函数
.
(1)解不等式
;
(2)若不等式
恒成立,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af681bfcfc5e82270e4ef0351b72db4.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a3bdef65f8426e230f20a4bb97e2d9.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b4a10d3682f03b161b864a7511473d.png)
您最近一年使用:0次
解题方法
8 . 已知向量
,
满足
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0580f685bd2df3c818b4e63a3f521bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef84d275246c94cd7d9c983231210fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec45d15f1201d887d24a4507976297e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 .
中,角A、B,C的对边分别为a,b,c,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17346c6f645f93fad4c8f350aebf1fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 从0,1,2,3四个数字组成的没有重复数字的四位数中任取一个数,则该数为偶数的概率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-03更新
|
955次组卷
|
4卷引用:四川省巴中市普通高中2024届高三“一诊”考试理科数学试题
四川省巴中市普通高中2024届高三“一诊”考试理科数学试题(已下线)专题2.3 组合及组合数(九个重难点突破)-2023-2024学年高二数学下学期重难点突破及混淆易错规避(人教A版2019)(已下线)6.2.3组合+6.2.4组合数 第三练 能力提升拔高山东省泰安市新泰市第一中学北校2023-2024学年高二下学期第一次阶段考试数学试题