解下列不等式:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277610b54c4309b4ea37d8afe32e46.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277610b54c4309b4ea37d8afe32e46.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae0867faf18890fdc4a8bec8c337a3b.png)
更新时间:2023-06-25 20:51:51
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【推荐1】说出下列不等式的变形依据.
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
(2)若
,则
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ab496d38a3f9867fde1782e616ec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384be547b9faf98f08fd9d83f241fc50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c21c6260bcade05f3a432841f449b5c.png)
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【推荐2】阅读材料:形如
的不等式,我们就称之为双连不等式,求解双连不等式的方法一,转化为不等式组求解,如
;方法二,利用不等式的性质直接求解,双连不等式的左、中、右同时减去1,得
,然后同时除以2,得
.
解决下列问题:
(1)请你将双连不等式
转化为不等式组.
(2)利用不等式的性质解双连不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac6af54ceb01fe3302edc8a2354493a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca4bb2ff39ede87d4d174a68ad57e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a286336e0da6d645d9ec17655f688ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a1a4025e867cbf2e7bc1749f0a0d78.png)
解决下列问题:
(1)请你将双连不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859c2f828418ea65a96e9deeb24a374a.png)
(2)利用不等式的性质解双连不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7eda8105cb0dc5e791ec8aa8f1a45e1.png)
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【推荐1】(1)解不等式:
,并把解集在数轴上表示出来.
(2)解不等式:
,并把解集在数轴上表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8160edea643b0b86ad4f7c73d98488f8.png)
![](https://img.xkw.com/dksih/QBM/2021/10/10/2826147971170304/2826229882658816/STEM/f35f0111-7e5a-4d64-9a09-a318be5572b9.png)
(2)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107b81cf5578de77af66272873239eca.png)
![](https://img.xkw.com/dksih/QBM/2021/10/10/2826147971170304/2826229882658816/STEM/53a91837-2fd5-45d8-91a5-6606e351db9c.png)
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