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1 . 已知实数x,y满足方程
.
(1)求
的值;
(2)设
与
是方程组
两组不同的解,其中
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beb6812158ca2a3082bd13ca07578f0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1afbc87ccffbc98b9ab58df8c69bee.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99307ab4373fbe72422ae5aa980db61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41039d45e37899d233232de3d802b105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccee8eb181dc117834582bc433eca559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab3cf6695638d5bcd26580174d7cbf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da3ff6f17be99ec311610efa08ba002.png)
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2 . 已知参数k为非零实数,记
与
为关于x,y的方程组
的两组不同实数解;记
与
为关于x,y的方程组
的两组不同实数解.
(1)求证:
,
;
(2)求
的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396ead2a01ebd1d6134732541008a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a03b0e1c4de970668548ebb944fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9c72eefda9b1192a4bc6982b52cc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78adf83070612501d95c80cd2f2bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e377ec55e3668e1daa9a58e0091930fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb66608b19763b0ebf13861149f2e10b.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8997257fd8e9f1286004489eb5ac4c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21b23d1bddc1acc93debcf1c1747ca7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41a0384d42a7a75ea168f57262eaef1.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301dec441538499bc41fefcc53586841.png)
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3 . 请同学们补全下面两个关于x的不等式的解答过程.
(1)
;
解:令
,
令
,计算
,
当
时,即
时,方程
不存在实根;
画
草图,
不等式的解集为______.
当
时,即______时,方程
的两根为______.
画
草图,
不等式的解集为______.
当
时,即______时,方程
的两根为______.
画
草图,
不等式的解集为______.
(2)
.
解:令
(*),
则方程(*)的三个根从小到大排列分别为
______;
______;
______.
把三个根分别标在x轴上,并完成表格,
请根据表格写出不等式
的解集.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458cbcd84273373e0a0bdab32ad42bad.png)
解:令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4317c59a6012372bc027d7badec24f.png)
令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06295591972865ce5a2fafb1427aa707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c70eef4e278303db019587ee2cc20f.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc39e3f9688bc77675ffdf0dd79da142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6232dc74b15e4acb0ac3482a1cbe6a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06295591972865ce5a2fafb1427aa707.png)
画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925d9d720033e5e20561eb5f0722ecef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/b7500d30-d563-4620-8611-50152041ac5f.png?resizew=165)
不等式的解集为______.
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2b0eb6b8e515c616b5cdd4c37fefc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06295591972865ce5a2fafb1427aa707.png)
画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925d9d720033e5e20561eb5f0722ecef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/f7cb6ca2-bf56-448e-896a-91b0659d6ed3.png?resizew=164)
不等式的解集为______.
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda1e6337ff7355c2fe9c19f9d619f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06295591972865ce5a2fafb1427aa707.png)
画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925d9d720033e5e20561eb5f0722ecef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/3bdfb626-c867-473d-bcff-8423f5c61714.png?resizew=166)
不等式的解集为______.
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef1d654789c54f96acda1437cffb865.png)
解:令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8fa5322900d260782795939a4085c3.png)
则方程(*)的三个根从小到大排列分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e92f14fb20f920f88dcad2ccd1d53f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dad5a12f34bed0da0de93beae0eaa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7ad31dd3397f7d2830182a8d309289.png)
把三个根分别标在x轴上,并完成表格,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/9af896b0-08b8-4ac2-980e-9da2035e8cbd.png?resizew=271)
x的取值范围 | ||||
|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef1d654789c54f96acda1437cffb865.png)
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4 . (1)解关于x,y的方程组![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee94cad924f3bde7a583545b6ac84012.png)
(2)已知
和
是关于x,y的方程组
(k为参数)的两组不同实数解.
求证:①
,
;
②
;
③
(其中
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee94cad924f3bde7a583545b6ac84012.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396ead2a01ebd1d6134732541008a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a03b0e1c4de970668548ebb944fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494c830fbe4b161a0d1506c1aaf15cfb.png)
求证:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda10b954abfc6bcd2fa0fe54536bcfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa675d90df61bdb59aa45a3654c6a71.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d28790c9a69068d3ce4caafae10a967.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681683ea78209722151377053b34d082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2851fd014aec602364532b264691c271.png)
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5 . 已知关于
,
的方程组
仅有一组实数解,则符合条件的实数
的个数是( )
![](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/6ae6790fa44b741d7634f97a409ffbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.5 | B.4 | C.3 | D.2 |
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6 . 设
是方程
的一组解,计算:
(1)
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad0086651e05c716cec1ba31cf09f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821dc5767ac7967687426e4b9c46c918.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b859b72b8127df011d0b3032d2c3ff3e.png)
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解题方法
7 . 已知且
的范围是________.从①
,②
,③
,④
,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0763edf8aa77e51936a5c6c30436e6.png)
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2024-01-21更新
|
294次组卷
|
2卷引用:北京市顺义区2023-2024学年高一上学期期末质量监测数学试卷
名校
8 . 已知定义在区间
上的函数
为奇函数.
(1)求实数
的值;
(2)判断函数
在区间
上的单调性并用定义证明;
(3)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c81caa90bdecc3f77c0343bd1f4d7d8.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f67412400fb47e929c2e16b1cab95b5.png)
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9 . 解关于
的不等式.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2389562523fb4d746237471bba0ca6e9.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1a4a7d1930dd9e5e3b64a736929c4e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2389562523fb4d746237471bba0ca6e9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1a4a7d1930dd9e5e3b64a736929c4e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3871fdb9e7cc0ac1afcd9e5314571b10.png)
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解题方法
10 . 已知函数
.
(1)在直角坐标系
下,画出函数
的草图(用铅笔作图);
(2)写出函数
的单调区间;
(3)若关于
方程
有
个解,求
的取值范围(直接写出答案即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5399eee71383eec4ae5b92b817ee430b.png)
(1)在直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb101c5df08aa35ae24a6416840b199b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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