先化简,再求值,其中
是从
和
中选取的一个合适的数,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a22a0deba2eea832cd13aacf4fda4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319d4912d2beeccfba9b066c347fa700.png)
更新时间:2020-07-08 16:00:54
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相似题推荐
解答题-计算题
|
适中
(0.65)
【推荐1】先化简,再求代数式(
)÷
的值,其中a=2sin45°+tan45°.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ae7be9f6565a076d25b01908280c366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cbec06c8cb9891ac12e28d29414d62.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】设
.
(1)化简A;
(2)当
时,记此时A的值为
;当
时,记此时A的值为
,…,解关于x的方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0598f57cd5d3ef7bbe3e0217b091e9be.png)
(1)化简A;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf59c5075f9e6fdf3782b6c0e528237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a3a4a3480610609e4b68b570e04664.png)
您最近一年使用:0次