题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062023-26605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062023-75589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062023-29489.png)
(I)求实数
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062024-12767.png)
(II)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062024-64340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062024-81383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062024-63506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-84724.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-52794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-58930.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-25660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-90955.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-37840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-85557.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062026-98660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062026-81764.png)
又点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-85557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062026-76709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-48482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-86298.png)
依题意
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-87591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-52794.png)
(Ⅱ)由
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-46879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-18552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-59434.png)
又点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-82473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062027-66263.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062028-46729.png)
故点
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062028-64555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062025-58930.png)
矩阵与变换所涉及的内容并不多,在平时只要注意归纳,并且计算过关此题可以轻松拿下。
【考点定位】考查矩阵的基本运算以及基本变换,属于容易题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062011-66311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062011-18095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062012-75164.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062012-86273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062012-72590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062012-18666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062012-78116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062004-60452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062004-26058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062001-76748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108062002-98690.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061956-13132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061956-62797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061956-36840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061956-19706.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061945-67731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061945-80141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061946-89176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061946-10769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108061946-83614.png)
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