12-13高三上·四川泸州·阶段练习
1 . 若定义在R上的函数
满足
,
,则称
为R上的线性变换,现有下列命题:
①
是R上的线性变换
②若
是R上的线性变换,则![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/ec5e562e418e42fab589cbb8d4c3a66d.png?resizew=93)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af7267fa641fe998666f090bac90f6e.png)
③若
与
均为R上的线性变换,则
是R上的线性变换
④
是R上的线性变换的充要条件为
是R上的一次函数
其中是真命题有________ (写出所有真命题的编号)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/316351d562c047fd920de24e239dea95.png?resizew=194)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/e9e256b32e6f43d6b6d48e14058310cb.png?resizew=138)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
①
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/120dbe0fcab84dc791a7252a9fdcb025.png?resizew=69)
②若
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/ec5e562e418e42fab589cbb8d4c3a66d.png?resizew=93)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af7267fa641fe998666f090bac90f6e.png)
③若
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/c16179ac6fbe40acaaf991b63470aeeb.png?resizew=34)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/4a5744ceca9442b9ad865b6cba7fe925.png?resizew=80)
④
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/2/26/1570774191767552/1570774197239808/STEM/6044816e2cdd470ca3e91edd19c7d069.png?resizew=36)
其中是真命题有
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12-13高三上·江苏扬州·阶段练习
2 . 将曲线
绕坐标原点按逆时针方向旋转45°,求所得曲线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377a2333ff8c63cbdb20b882d6d5a7ec.png)
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9-10高二下·江苏盐城·期末
3 . 在直角坐标系中,已知椭圆
,矩阵阵
,
,求在矩阵
作用下变换所得到的图形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9645e4bbf8c1126d8c30719f2dee3651.png)
![](https://img.xkw.com/dksih/QBM/2010/9/7/1569827656343552/1569827661414400/STEM/0154d6d99b7c41e69498a0848df196ab.png?resizew=83)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cebf90a5593513fbb6576e68132f6ea.png)
![](https://img.xkw.com/dksih/QBM/2010/9/7/1569827656343552/1569827661414400/STEM/b0a3f69478b542088ae4e7c4c741498c.png?resizew=31)
您最近一年使用:0次