List questions from matrix-equations

75

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If A is a symmetric n × n matrix, what does $x^TAx = 1$ have at least one solution imply? x is a column vector.

Published on 13 Nov 2016 - 11:04

189

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If the matrices $A^3 = 0$, $B^3=0$ and $AB=BA$ then show this:

Published on 13 Nov 2016 - 21:42

523

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Special Woodbury identity

Published on 15 Nov 2016 - 16:56

78

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Constraints on a $2 \times 2$ matrix

Published on 15 Nov 2016 - 23:01

651

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Find the eigenvectors of an unknown matrix transform?

Published on 17 Nov 2016 - 18:39

35

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Subspace of $ \mathbb{R}^2 $

Published on 17 Nov 2016 - 18:56

314

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Solve a matrix equation, given 2 matrixes

Published on 18 Nov 2016 - 13:51

1.1k

Views

Numerical range of a normal matrix is the convex hull of its eigenvalues

Published on 30 Mar 2026 - 13:43

26

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Proof of Identity including matrices and vectors

Published on 02 Apr 2026 - 21:50

21

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Solution for this matrix equation?

Published on 21 Nov 2016 - 9:11

52

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How to prove the following matrices inequality?

Published on 21 Nov 2016 - 12:36

76

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How to show the following function is surjective?

Published on 21 Nov 2016 - 22:17

195

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How to solve 'Tensorial' equations?

Published on 24 Nov 2016 - 11:52

1.3k

Views

Lens design using the matrix method (three lenses)

Published on 06 Apr 2026 - 19:30

303

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Matrix and scalar adddition

Published on 27 Nov 2016 - 14:47

List Question

If A is a symmetric n × n matrix, what does $x^TAx = 1$ have at least one solution imply? x is a column vector.

If the matrices $A^3 = 0$, $B^3=0$ and $AB=BA$ then show this:

Special Woodbury identity

Constraints on a $2 \times 2$ matrix

Find the eigenvectors of an unknown matrix transform?

Subspace of $ \mathbb{R}^2 $

Solve a matrix equation, given 2 matrixes

Numerical range of a normal matrix is the convex hull of its eigenvalues

Proof of Identity including matrices and vectors

Solution for this matrix equation?

How to prove the following matrices inequality?

How to show the following function is surjective?

How to solve 'Tensorial' equations?

Lens design using the matrix method (three lenses)

Matrix and scalar adddition

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