Not every linear transformation from [img=22x19]1803b6a8affc14b.png[/img]to [img=25x19]1803b6a8b9210ff.png[/img]is a matrix transformation.
错
举一反三
- The columns of the standard matrix for a linear transformation from [img=22x19]1803b6a8c19a71a.png[/img]to [img=25x19]1803b6a8c9f3863.png[/img] are the images of the columns of the [img=44x19]1803b6a8d3fc1b1.png[/img] indentity matrix.
- Every matrix transformation is a linear transformation.
- Every matrix transformation is a linear transformation. A: 正确 B: 错误
- The transformation that takes x to 2x+1 is a linear transformation.
- Let [img=99x19]1803c4e7d6c70bb.png[/img] be a linear transformation. If A is the standard matrix representation of [img=13x19]1803c4e7de70caa.png[/img], then an [img=44x19]1803c4e7e5f3add.png[/img] matrix B will also be a matrix representation of L if and only if B is similar to A.
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判断float型变量x是否满足[img=77x19]1803bce8616286c.png[/img]的正确的表达式是？ A: 6.0 < x < 8.0 B: 6 < x && x < 8 C: !(x <= 6 && x >= 8) D: 6.0 < x || x < 8.0
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设X是随机变量，且[img=139x31]1802e2aa00edf66.jpg[/img]，则D(X)=（ ）. A: 2 B: 4 C: 6 D: 8
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结构用先处理法所得到的结构刚度矩阵的阶数为 。[img=118x74]17e0bbff2e56aba.png[/img] A: 14×14 B: 21×21 C: 6×6 D: 19×19
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判断float型变量x是否满足[img=77x19]17de85f024249b7.png[/img]的正确的表达式是？ A: 6.0 <; x <; 8.0 B: 6 <; x && x <; 8 C: !(x <;= 6 && x >;= 8) D: 6.0 <; x || x <; 8.0
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如图，a点的电位为？V[img=231x119]1803bc8a390eba7.png[/img] A: 0 B: -8 C: -6 D: -14 E: 8 F: 14