计算题:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c469e58640086844fc17ab80099b0571.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a7b87858f83ee17abaa92db8e23b0e.png)
更新时间:2021-03-16 12:53:41
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解答题-问答题
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适中
(0.65)
名校
【推荐2】(1)解不等式组:
,并写出它的正整数解;
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68a26233dc2b16fe0e931f2224510fb.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237e4bc8dd0fb94c7583bb996feb89c9.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】定义一种新运算“
”为:当
时,
;当
时,
.例如:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1488b4dc98c132977eba8ab7fe9dcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb2ba5d46a736c7e9d3c50862797c9d.png)
.
(1)填空:
;
(2)若
,求
的值;
(3)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928c53175e3e54f12c20d7fa62299a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a31824432fc8f58f1e7ba1c9d72c828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d3598dcc2f3d258a8585f247fff1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d39f63380f7f1b57b2441522692678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da98e958599de8d65cd60bf6ebbd578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b391582aee94d46dfe71a18cf09de7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1488b4dc98c132977eba8ab7fe9dcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb2ba5d46a736c7e9d3c50862797c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9409821cda409d421a4f53e0deda6.png)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308e996fb5fc6f17a7ec543435c006d1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac01b92d276e185a141668a344d86907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1f882289480219ee7641a417c4c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次