Do the columns of the matrix span R2? Select an Answer 1. A = [2 −4 −5 10] Select an Answer 2. A = [7 −55 4 −5 40 −3] Select an Answer 3. A = [−7 −6 −2 9] Select an Answer 4. A = [−8 32 128 7 −28 −112]
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Do the columns of the matrix span ?
Select an Answer
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![Do the columns of the matrix span R2? Select an Answer 1. A = [2 −4 −5 10] Select an Answer 2. A = [7 −55 4 −5 40 −3] Select an Answer 3. A = [−7 −6 −2 9] Select an Answer 4. A = [−8 32 128 7 −28 −112]](https://www.doubtrix.com/uploads/editor/1904344946lbvPbyBVfH.png)
![Let H = span{u, v}. For each of the following sets of vectors determine whether H is a line or a plane. Select an Answer 1. u = [−1 −2 2], v = [−4 −8 8] Select an Answer 2. u = [1 −2 1], v = [−4 5 −1] Select an Answer 3. u = [−8 −8 −8], v = [0 0 0] Select an Answer u = [5 5 −4], v = [21 20 −15]](https://www.doubtrix.com/uploads/editor/1964002623vfDgpgJUlp.png)
![Let u = [-10 -8 -7], A = [6 7 16 0 2 -4 1 2 1]. Is u in the subset of R^3 spanned by the columns of A? Why or why not? Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or decimal for each matrix element.) A. No, the reduced row echelon form of the augmented matrix is which is an inconsistent system. B. Yes, multiplying A by the vector writes u as a linear combination of the columns of A.](https://www.doubtrix.com/js/ckeditor/filemanager/connectors/php/editor/1700960259-Q6.JPG)
![Consider the following matrices: A = [−5 −4 8 4 9 1], B = [−2 −4 2 −3 −3 8], C = [−5 −8 5 −7] D = [−1 5 4 −3] and E = [−7 9 −1 −2 −8 −3] From the following statements select those that are true. B+C is well defined. The matrix product A×E is well defined and is of order 2×2.3C−7D is well defined and is of order 2×2 The matrix product ExD is not well defined. The matrix product B×C is well defined. A+B is well defined and is of order 2×3.](https://www.doubtrix.com/uploads/editor/7922707087lPSeHZbDrP.png)