1 . (1)化简求值:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28d061ad25fb0a0e2918c85ffe17ad4.png)
____________ .
(2)方程
的解![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28d061ad25fb0a0e2918c85ffe17ad4.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28db4425b17092b429bf16bc7321b433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
名校
2 . 甲乙两位同学求关于
的方程组
的解集
时,甲因看错了
,解得
;乙因看错了
,解得
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30800bcb030cf5ee97d0e21fbbe8c368.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22d7c214d9685da7be80319ed80d8df.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7822f361618da0965955d7bc25c4b49c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46102fb6ed356e25bae44efe2139ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331c214721617d58a0c4a8178cfb7b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0364e6be73d9d631bce3d194b0b43e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30800bcb030cf5ee97d0e21fbbe8c368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22d7c214d9685da7be80319ed80d8df.png)
您最近一年使用:0次
3 . 在解方程
时,甲同学看错了
,解得方程的根为
,
;乙同学看错了
,解得方程的根为
,
,则方程中的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a7b78d895784b4af75b962bd40f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb35c769007b54a0204e85a0e5223bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4223bd6ee8f82d59d244371fbcddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9022b9c5b0edd38748bb21a9cdba6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
您最近一年使用:0次
4 . 算筹是中国古代用来记数、列式和进行各种数与式演算的一种工具.在算筹计数法中,以“立”,“卧”两种排列方式来表示单位数目,表示多位数时,个位用立式,十位用卧式,百位用立式,千位用卧式,以此类推.《九章算术》的“方程”一章中介绍了一种用“算筹图”解决一次方程组的方法.如图(1),前两列的符号分别代表未知数
的系数,因此,根据图(1)可以列出方程:
.请你根据图(2)列出方程组________ ,解得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21de33ebccecd56a42c703746b607a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/c8eaaf9a-cd7e-4d76-87a5-ae724466068a.png?resizew=231)
您最近一年使用:0次
名校
解题方法
5 . 关于
的不等式
的解集中恰有3个整数,写出符合题意的
的两个值__________ ,__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666484b1d6aa4cfadac9eed324d0f19d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
6 . 已知函数
,若关于
的不等式
的解为
,则
=______ ,
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca282efa5c53158a87460b965dd9166f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33f7c7a7c2a77c9e5238f0383741d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f3f29b8e751a847b125337d30d74a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2023-09-10更新
|
272次组卷
|
2卷引用:福建省连江黄如论中学2023-2024学年高一上学期入学考试数学试题
解题方法
7 . 设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d35d25813e01902e750742ab3e2dd8.png)
__________ ;不等式
的解的范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288ca01aed34e6de6372e4f18fdafc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d35d25813e01902e750742ab3e2dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439a5dfb662963ed2819be062ee7f49d.png)
您最近一年使用:0次
2022-12-17更新
|
221次组卷
|
2卷引用:江苏省南京市田家炳高级中学2022-2023学年高一上学期12月月考数学试题
8 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b550ada4ca5e48ef043b229a8beb9da.png)
______ ,方程
的解为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b550ada4ca5e48ef043b229a8beb9da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b65495ce56086bc25043837f04f67de.png)
您最近一年使用:0次
名校
9 . 命题“大于2的自然数是不等式
的解”的否定为________ ;其否定为________ (填“真命题”或“假命题”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e17fa4fb20aa97af4ae82c27f753f1.png)
您最近一年使用:0次
21-22高一·全国·课后作业
10 . 二次函数与一元二次方程、不等式的解的对应关系
判别式Δ=b2-4ac | Δ>0 | Δ=0 | Δ<0 |
二次函数y=ax2+bx+c(a>0)的图象 | |||
一元二次方程ax2+bx+c=0(a>0)的根 | 有两个不相等的实数根x1,x2(x1<x2) | 有两个相等的实数根x1=x2=![]() | 没有实数根 |
ax2+bx+c>0(a>0)的解集 | ![]() | R | |
ax2+bx+c<0(a>0)的解集 |
您最近一年使用:0次