Question

For the matrices given, find an invertible matrix $U$ such that $UA=B$ and express $U$ as a product of elementary matrices.

score 296 · Answer 1 · 2026-03-26 06:34:46

296

Views

For the matrices given, find an invertible matrix $U$ such that $UA=B$ and express $U$ as a product of elementary matrices.

Published on 26 Mar 2026 - 6:34

score 70 · Answer 2 · 2026-03-26 06:08:13

70

Views

What is the significance of this property of the determinant?

Published on 26 Mar 2026 - 6:08

score 45 · Answer 3 · 2026-03-25 10:21:49

45

Views

Prove $\left|\begin{smallmatrix} \sin^2x&\cot x&1\\ \sin^2y&\cot y&1\\ \sin^2z&\cot z&1 \end{smallmatrix}\right|=0$ if $x+y+z=\pi$

Published on 25 Mar 2026 - 10:21

score 53 · Answer 4 · 2026-04-03 14:28:46

53

Views

How many coefficients must be modified to the minimum to get an invertible matrix?

Published on 03 Apr 2026 - 14:28

score 95 · Answer 5 · 2026-03-22 21:42:59

95

Views

Prove that a function is upper semi-continuous

Published on 22 Mar 2026 - 21:42

score 57 · Answer 6 · 2026-03-27 01:29:39

57

Views

Computing the power of the matrix $A$

Published on 27 Mar 2026 - 1:29

score 96 · Answer 7 · 2026-03-25 09:39:59

96

Views

How do you check if a basis of matrices are orthogonal, in a given inner product space?

Published on 25 Mar 2026 - 9:39

score 47 · Answer 8 · 2018-03-02 11:23:28

47

Views

Why multiplying the elements in first column of a matrix by k multiplies the determinant by k

Published on 02 Mar 2018 - 11:23

score 435 · Answer 9 · 2026-03-25 06:34:34

435

Views

How to calculate $(I - xy^T)^{-1}$?

Published on 25 Mar 2026 - 6:34

score 593 · Answer 10 · 2026-04-03 14:23:08

593

Views

Showing two matrices have the same minimal polynomial

Published on 03 Apr 2026 - 14:23

score 100 · Answer 11 · 2026-04-03 17:55:58

100

Views

inequality on matrix Hadamard Products $\|A \odot X\|_F$

Published on 03 Apr 2026 - 17:55

score 90 · Answer 12 · 2026-03-24 23:51:08

90

Views

interpolation in multiobjective optimization of linear functions

Published on 24 Mar 2026 - 23:51

score 137 · Answer 13 · 2026-03-25 06:34:57

137

Views

Is the the $n \times n$ matrix $A_{ij} = (ij + 1)^m$, $m \geq n$ invertible?

Published on 25 Mar 2026 - 6:34

score 312 · Answer 14 · 2018-03-02 17:28:36

312

Views

Show that $|\det(A_n)|=n^{n/2}$

Published on 02 Mar 2018 - 17:28

score 63 · Answer 15 · 2026-04-03 14:06:23

63

Views

Need to do an opposite operation to a dot product with non square matrices, cannot figure out how.

Published on 03 Apr 2026 - 14:06

List Question

For the matrices given, find an invertible matrix $U$ such that $UA=B$ and express $U$ as a product of elementary matrices.

What is the significance of this property of the determinant?

Prove $\left|\begin{smallmatrix} \sin^2x&\cot x&1\\ \sin^2y&\cot y&1\\ \sin^2z&\cot z&1 \end{smallmatrix}\right|=0$ if $x+y+z=\pi$

How many coefficients must be modified to the minimum to get an invertible matrix?

Prove that a function is upper semi-continuous

Computing the power of the matrix $A$

How do you check if a basis of matrices are orthogonal, in a given inner product space?

Why multiplying the elements in first column of a matrix by k multiplies the determinant by k

How to calculate $(I - xy^T)^{-1}$?

Showing two matrices have the same minimal polynomial

inequality on matrix Hadamard Products $\|A \odot X\|_F$

interpolation in multiobjective optimization of linear functions

Is the the $n \times n$ matrix $A_{ij} = (ij + 1)^m$, $m \geq n$ invertible?

Show that $|\det(A_n)|=n^{n/2}$

Need to do an opposite operation to a dot product with non square matrices, cannot figure out how.

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