若方程
的解与关于
的方程
的解互为倒数,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9712d394c84db07d209167d6f2aeb26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f6ba8c40558fd1ce5214addda5fcf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2021-01-25 11:22:37
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解答题-问答题
|
容易
(0.94)
【推荐2】写出下列各数的倒数:
(1)
; (2)
; (3)
; (4)0.17; (5)
; (6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91498d22fa9e1bae4ee8399259d9cfd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c17c0535b686495dc04d15172da008f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8152c402e631d79abb25d6d38a01d985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edb87ba7ca4560c6c1c37b6d02bcec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2b8cc0501b3f8570df5c834d3269ac.png)
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解答题-问答题
|
容易
(0.94)
【推荐1】设
为实数,则我们把形如
的式子叫做二阶行列式,它的运算法则用公式表示为
,请利用此法则解决以下问题:
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29320f184b4027471a2951527457453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fec025453bac0d34d5e9bdf61a6755.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc122dc362b8e08c95460275c892c74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61be139543ee247abdce365f75acc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次