已知关于
、
的方程组
若
的值为非负数,
的值为正数.
(1)求
的取值范围;
(2)在
的取值范围内,当
为何负整数时,不等式
的解集为
.
![](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/69c8b49cb4124190f9e6a22d1c45147b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5d21ef05b901098d8fd68bf3cb30b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
22-23七年级下·四川巴中·期末 查看更多[2]
更新时间:2024-03-04 22:12:19
|
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解答题-问答题
|
适中
(0.65)
【推荐1】已知关于m、n的二元一次方程组
的解满足
,且关于x的不等式组
恰好有4个整数解.
(1)求方程组的解
(用含有y的式子表示);
(2)求所有符合上述条件的整数y的个数______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263cd52e02b8785347723e9109655ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd68dad20a530c17474ad6c73be07e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2b60d118b30cd112bcc5bae9876b1c.png)
(1)求方程组的解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a906392c6a7dac54420a210bee1b0829.png)
(2)求所有符合上述条件的整数y的个数______.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】解下列不等式:
(1)3(x﹣2)≤5x+4
(2)
≥
(1)3(x﹣2)≤5x+4
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b401eb4aea08a97b36dd2845736871a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a581da730d897a251af68e49181c4daf.png)
您最近一年使用:0次