List questions from inverse

Published on 14 Apr 2026 - 19:32

603

Views

Show that a matrix is invertible and that its inverse has integral entries

Published on 15 Apr 2026 - 19:24

104

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Is it possible to construct matrices $A$ and $B$ such that $AB$ is invertible?

Published on 12 Apr 2026 - 1:55

415

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How to prove this inequality on trace of inverse of a positive definite matrix?

Published on 12 Apr 2026 - 0:31

80

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Derivation of exact-fit polynomial equation

Published on 12 Apr 2026 - 6:31

46

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Inverse function to $\cos(\sqrt{x})$ for $x\in [\pi^2; 4\pi^2]$.

Published on 14 Apr 2026 - 2:27

56

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Name for semigroupoid-like structure applicable to a water flow network in graph theory

Published on 25 Mar 2026 - 17:32

333

Views

Derivative of Inverse of sum of matrices

Published on 22 Apr 2026 - 11:38

240

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Are direct sums necessarily invertible?

Published on 11 Apr 2026 - 9:33

279

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Find all values of x for which B is not invertible.

Published on 16 Apr 2026 - 1:13

770

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Do two matrices commute only if one matrix is the inverse of the other?

Published on 15 Apr 2026 - 6:56

54

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Inverting $3 \times 3$ matrix via Gauss-Jordan, cannot find my mistake

Published on 09 Apr 2026 - 12:57

44

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Help with inverse in non-linear function

Published on 10 Apr 2026 - 3:38

70

Views

How do I find the Inverse of $f(x)$?

Published on 27 Mar 2026 - 12:34

116

Views

Inverse $z$-transform of $\frac{z_{1}^{-1}}{1 - az_{1}^{-1}z_{2}^{-2}}$

Published on 15 Apr 2026 - 17:14

List Question

Inverse of matrix with equal entries on, below and above the diagonal

Show that a matrix is invertible and that its inverse has integral entries

Is it possible to construct matrices $A$ and $B$ such that $AB$ is invertible?

How to prove this inequality on trace of inverse of a positive definite matrix?

Derivation of exact-fit polynomial equation

Inverse function to $\cos(\sqrt{x})$ for $x\in [\pi^2; 4\pi^2]$.

Name for semigroupoid-like structure applicable to a water flow network in graph theory

Derivative of Inverse of sum of matrices

Are direct sums necessarily invertible?

Find all values of x for which B is not invertible.

Do two matrices commute only if one matrix is the inverse of the other?

Inverting $3 \times 3$ matrix via Gauss-Jordan, cannot find my mistake

Help with inverse in non-linear function

How do I find the Inverse of $f(x)$?

Inverse $z$-transform of $\frac{z_{1}^{-1}}{1 - az_{1}^{-1}z_{2}^{-2}}$

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