1 . 函数
的部分图像的示意图如图所示,已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dac6977823733308100a1c267e3bf6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29602cbc73377b9e6dde14a1cccbf05a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6d9f798a99a7b28888820716549f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe66a5de3864adef925142cbd08fc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dac6977823733308100a1c267e3bf6.png)
您最近一年使用:0次
名校
解题方法
2 . 元荡湖位于长三角一体化示范区内,2018年青浦㨦手吴江启动实施了元荡生态岸线整治,2023年8月实现元荡青浦段岸线全线贯通.如图,为拓展旅游业务,现准备在元荡湖边建造一个观景台
,已知射线
,
为元荡湖两边夹角为
的公路(长度均超过2千米),在两条公路
,
上分别设立游客接送点
,
,从观景台
到
,
建造两条观光线路
,
,测得
千米,
千米.
的长度;
(2)若
,求两条观光线路
与
之和的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810fee760e06028fb7d37e65db79bfa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c65312db84bbe37e0e1b400bf78c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add60595ecea5d00ff1fbb2a5409be73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
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名校
3 . 平面直角坐标系中
,设点
是线段
的
等分点,其中
.
时,试用
表示
;
(2)当
时,求
的值;
(3)当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c26ad9deaf1c845754137638bb4e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa963c9dbb012bb08c2fdf5e5e41034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c941130c5d1166ced3b09aa0c883b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c12f9c428675ab178fc31e01f4334ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349eef3a3e97e2718ed5e77f313a4292.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ea0392d4bd0374c8a2b12a355e4655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60f5e90b85f837727d1148b18b9a0db.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ec5d76db9bd05547932966c9913dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b87fd0258955a65d55b1daf41eac0.png)
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4 . 在某一个十字路口,每次亮绿灯的时长为
(
为时间单位:秒),那么每次绿灯亮时,在同一条直行道路上同方向能有多少辆汽车通过该十字路口?
该问题涉及车长、车距、车速,前方堵塞状况包括行人非机动车等因素.为了将问题简化,在路况车况驾驶状态等都良好的前提下,提出如下基本假设:
1.通过路口的车辆长度都相等;
2.等待通行时,前后相邻两辆车的车距都相等;
3.绿灯亮时,汽车都是沿同方向从静止状态匀加速启动,到达最高限速汽车开始匀速行驶;
4.离路口信号灯最近的第一辆车在绿灯亮后延迟
时间开始动起来.前一辆车启动后,下一辆车启动的延迟时间相等,在延迟时间内,车辆保持静止;
5.按照交通安全法规行驶,行车秩序良好,没有碰擦或堵塞等现象发生.
1.车长设为
,取
,车距设为
,取
,第一辆车离停车线距离为
;
2.加速度记作
,取
,汽车在匀加速运动
时段行驶路程
;
3.前后车启动延迟时间记为
,取
;
4.第
辆车启动延迟时间为
;
5.该十字路口限速
,换算为
;
6.第
辆车到达最高限速的时间为
取
.
设第
辆车在绿灯持续
时间内驶离停车线的距离为
.根据上述假设与数据,
,依次类推.请你解决下列问题:
(1)求
;(结果保留一位小数,单位:
)
(2)对于第
辆车,写出函数
的分段表达式;
(3)求在亮绿灯的
内,这一条直行道路上同方向能有多少辆汽车通过该十字路口.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6fd3aa935cffb2a4526ed28f47e4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2065bdd4392601a18d1ef1fc1fdb13ce.png)
该问题涉及车长、车距、车速,前方堵塞状况包括行人非机动车等因素.为了将问题简化,在路况车况驾驶状态等都良好的前提下,提出如下基本假设:
1.通过路口的车辆长度都相等;
2.等待通行时,前后相邻两辆车的车距都相等;
3.绿灯亮时,汽车都是沿同方向从静止状态匀加速启动,到达最高限速汽车开始匀速行驶;
4.离路口信号灯最近的第一辆车在绿灯亮后延迟
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9206b8d3214e21a3115c6bc9886d03.png)
5.按照交通安全法规行驶,行车秩序良好,没有碰擦或堵塞等现象发生.
1.车长设为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd09cd596379a9b81dd6cd74e123fd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97599b586b7decae67a55cd008b9091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651a6747032c07c0ac12257e6fe8b254.png)
2.加速度记作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d90ff2ab2472b25fd95756e144f861d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a54eb2123d9eafa3b923287abe8b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2c53ba413678dc85ab3a6f0faf3c9e.png)
3.前后车启动延迟时间记为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9206b8d3214e21a3115c6bc9886d03.png)
4.第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ac4aec03431ef10172065c4a4fad20.png)
5.该十字路口限速
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d55f3eb3475ce28862370d286ebc4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e29784992adeb6014c71cbb551e0652.png)
6.第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b0b9925db981df603f7e863189fe3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1ccd5ed2a995b0162013014396321f.png)
设第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a54eb2123d9eafa3b923287abe8b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f48ae649161e580a4f96966f92abbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b865e8598fcbb953b40dbb143576640d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a3dc3e602639ccbf1a2e9c82a68e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
(2)对于第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f48ae649161e580a4f96966f92abbc.png)
(3)求在亮绿灯的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6fd3aa935cffb2a4526ed28f47e4ee.png)
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解题方法
5 . 已知一元二次方程
.
(1)在复数范围内解该方程;
(2)设这个方程的两个复数根
在复平面上所对应的向量分别为
(
为坐标原点),求
与
夹角
的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ce5f1be547bd7e6852875d3aa4ad77.png)
(1)在复数范围内解该方程;
(2)设这个方程的两个复数根
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02bf8659b535ca7ffc2f4647dde72a24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cbdd6bad9c05c3bee467655d32f538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30deb1f343048675b9b231620369668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1640d3fff861f45c5eb4019943b000f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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解题方法
6 . 已知角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b6f607f3471373bc9e851ac8a579c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b81ce0c95f338dffecd185a981ec20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
您最近一年使用:0次
7 . 已知函数
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8148d19a676998fefef19fcea22a3972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afaa9cf5610f785f5873d01ea0c1cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d514174b3d31834dd436ba2bd1d8d1.png)
A.11 | B.14 | C.17 | D.20 |
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8 . 设
.
(1)当
时,用函数单调性的定义证明:函数
在区间
上是严格增函数.
(2)①根据a的不同取值,讨论函数
在区间
上零点的个数;
②若函数
在区间
(k为正整数)上恰有7个零点,求k的最小值及此时a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14696ba10834f2d6b8891bf80abd0c79.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301605e86e5a5e61a65c91cd3dd8b77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
(2)①根据a的不同取值,讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137d6a66a015ddd2a8076f35ed191927.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7f465e11dcb6a1cf9b4cf111f7b249.png)
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9 . 已知函数
的部分图象如图所示.
的解析式与单调增区间;
(2)若将
的图象向右平移
个单位,再向上平移1个单位得到
的图象,写出
图象的对称中心的坐标,并求当
时,
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6309e18f51f43800c0a16205c6a491b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31a8b7f6d3b664b2c9bae09c3a6f884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
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名校
10 . 已知复数
为虚数单位,其中
是实数.
(1)若
是实数,求
的值;
(2)若复数
在复平面内对应的点在第二象限,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3043295ad00a6df6e77eb7a21c88e189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04f844e8fd9d9b1ef835e23eaa54e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a1ec15680a35a56e15d8c582eb3ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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