1 . 求关于
的方程组:
有唯一解的条件,并求在此条件下该方程组的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e43d36ad6b3726431ebcfbebad17a2.png)
您最近一年使用:0次
2 . 求关于
的方程组
,有唯一解的条件,并求在此条件下该方程组的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2444f2183746892574776148af2d427b.png)
您最近一年使用:0次
3 . 解关于
,
,
的方程组:
.
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3da28c142d50d84837870b8bdbaeed.png)
您最近一年使用:0次
4 . 利用行列式解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b835e7bab2181497a46a3f38fb4672.png)
您最近一年使用:0次
名校
5 . 命题:①
;
②矩阵
、
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5720485f3077f50bdea60ce4e2dde7e.png)
③若
、
不共线,且
,
,则
;
④若三元一次方程组有
,则该方程组有无穷多组解;
上述命题中正确的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177f821366827c5b94a7fd8065eadf76.png)
②矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98573a9a667b0eebb101d0811a4e761a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1611029414e220228e49fecefb40af47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5720485f3077f50bdea60ce4e2dde7e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772a19196fc427d3aac1164c927fe2e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb0940732e5f30a76d39358add2709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9e0ce64ae045a2ca99a8a25dada3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c49e85355623dd104fae1231b6a408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf622559035c0764b67644604514c17.png)
④若三元一次方程组有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90804c52cb76ba60389cddabd4dd8350.png)
上述命题中正确的个数有( )
A.0个 | B.1个 | C.2个 | D.3个 |
您最近一年使用:0次
6 . 讨论关于
,
,
的方程组
解的情况.
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bfc32bbf7399c354b395972191161e.png)
您最近一年使用:0次
7 . 讨论关于
,
,
的方程组
解的情况.
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fbf5d945cf0aeb33f336746fec196b.png)
您最近一年使用:0次
8 . 对三元一次方程组
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c3ca392d2af61e5b5ab7b7efbc337.png)
A.若![]() |
B.若![]() |
C.若![]() |
D.若![]() |
您最近一年使用:0次
9 . 解关于
,
,
的方程组
.
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37050ed51d892a71a969742226ff099.png)
您最近一年使用:0次
10 . 等差数列
中,公差
,则方程组
的解的情况是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd0aefe8298a5bd01bdc8ed3c51162b0.png)
您最近一年使用:0次