19-20高二上·上海浦东新·阶段练习
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1 . 若增广矩阵
的线性方程组无解,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935ae36f1bff88fc927474dfcf004709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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16-17高二上·上海浦东新·阶段练习
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2 . 平面直角坐标
上的定点
,
,
,矩阵
将向量
、
、
分别变换成向量
、
、
,如果联结它们的终点
、
、
构成直角三角形,且斜边为
,则k的值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466e8c438084aef563c6aaeff3bca583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f0ee968f9a247871a54e505fbd111b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6c46791636cce3b04edbb799e53c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36643344d7f6432f50b24ea370c3a5e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dbe3b6be3f4d07e01d10ab717210400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06819642a912802fc75675c2d010b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
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3 . 用行列式解关于x、y的方程组
,并讨论说明解的情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05c6e47759615be25e62ced98468f21.png)
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16-17高二下·上海浦东新·阶段练习
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4 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30cdb817864dabb858504515b92dde80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
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5 . 定义
为向量
的一个矩阵变换,
(1)若
,求
,
;
(2)设向量
,
为坐标原点,请计算
并探究
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fec7356f03946f66458761c7a6c8824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab74eb5a0364596a1d4a64ece6647ec8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6665dc77d95a288e8b1d4e56b5bf0b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c19f5cb93472fd7ba81dcaa11ec1e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c551871c40f555819efcd173fffbd332.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d7b4a28f36f07866e8f4bd0902bec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e9105a84f707abf33c704d0f9ca757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afa6445288d1dfc4a1f2f3fbfb6d1b2.png)
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6 . 解关于
,
的方程组
(
为任意实数).
(1)求
,
,
.
(2)当
为何值时方程组无解?当
为何值时方程组有解?并求出方程组的解.
![](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/f375d7781f7d027a8241a2ece2e183a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858c3c4dc236e86e671b1c68798dfbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c8e57fc5010386439814538b26095c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 方程组
的系数矩阵为_________ ;增广矩阵为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ffdd55593b0e3727caa9d9f189b52f.png)
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8 . 上海市旅游节刚落下帷幕,在旅游节期间,甲、乙、丙三位市民顾客分别获得一些景区门票的折扣消费券,数量如表1,已知这些景区原价和折扣价如表2(单位:元).
表1:
表2:
(1)按照上述表格的行列次序分别写出这三位市民获得的折扣消费券数量矩阵A和三个景区的门票折扣后价格矩阵B;
(2)利用你所学的矩阵知识,计算三位市民各获得多少元折扣?
表1:
数量 | 景区1 | 景区2 | 景区3 |
甲 | 0 | 2 | 2 |
乙 | 3 | 0 | 1 |
丙 | 4 | 1 | 0 |
门票 | 景区1 | 景区2 | 景区3 |
原价 | 60 | 90 | 120 |
折扣后价 | 40 | 60 | 80 |
(2)利用你所学的矩阵知识,计算三位市民各获得多少元折扣?
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2020-01-03更新
|
82次组卷
|
2卷引用:上海市七宝中学2018-2019学年高二上学期期中数学试题
9 . 矩阵的一种运算
,该运算的几何意义为平面上的点
在矩阵
作用下变换成点
,若曲线
,在矩阵
的作用下变换成曲线
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c158a0dafc1ed72d4cd92ce8be537d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1eaadd274b7644891f5550a799a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f989e3dc5d752aa2638069f325807db0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb99abc26156c2dfe6941041e7e9f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5339be0bc4d6f090b6de7112636d500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760a793ad8dadeba59aef81106e95288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-12-14更新
|
200次组卷
|
2卷引用:2018年上海市复旦附中高三5月三模数学试题
名校
10 . 用行列式的方法解关于
,
的方程组
,并对解的情况进行讨论.
![](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/43dbdc64206e393f20147d4c5f68ed19.png)
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2019-12-11更新
|
65次组卷
|
2卷引用:上海市位育中学2018-2019学年高二上学期10月月考数学试题