Question

the inverse of $f(x)=x-x^p$

score 198 · Answer 1 · 2019-08-01 14:46:17

198

Views

the inverse of $f(x)=x-x^p$

Published on 01 Aug 2019 - 14:46

score 3.2k · Answer 2 · 2026-03-26 13:57:19

3.2k

Views

Is non semi-positive definite matrix invertible?

Published on 26 Mar 2026 - 13:57

score 561 · Answer 3 · 2019-08-02 16:33:16

561

Views

Finding the derivative of $f(x) = \arcsin(\sin(x))$. I get $f'(x)=1$, but the answer is $f'(x)=\frac{\cos x}{|\cos x|}$.

Published on 02 Aug 2019 - 16:33

score 256 · Answer 4 · 2019-08-02 16:57:41

256

Views

Inverse Matrix ( If there are two different left inverse for a matrix then the matrix has no right inverse)

Published on 02 Aug 2019 - 16:57

score 194 · Answer 5 · 2026-03-26 06:25:47

194

Views

Direct solution to maximum likelihood computation problem using the derivative of multivariate Gaussian w.r.t. covariance matrix

Published on 26 Mar 2026 - 6:25

score 61 · Answer 6 · 2019-08-07 13:57:08

61

Views

Find the modular inverse of a number when $b\neq1$

Published on 07 Aug 2019 - 13:57

score 84 · Answer 7 · 2019-08-07 18:24:32

84

Views

Find the inverse in $F = \frac{\Bbb{Z}_{7}[x]}{g(x)}$ of a polynomial $p(x)$

Published on 07 Aug 2019 - 18:24

score 138 · Answer 8 · 2026-03-27 13:41:03

138

Views

Trace of $(K+ vv^T)^{-1} (K+uu^T)$

Published on 27 Mar 2026 - 13:41

score 1.2k · Answer 9 · 2026-03-25 17:29:47

1.2k

Views

How to invert a block tridiagonal matrix?

Published on 25 Mar 2026 - 17:29

score 195 · Answer 10 · 2019-08-09 15:36:48

195

Views

Showing $\det\big[ (B+K)^{-1} (A+K) \big] = O(1) $ when $A,B$ are rank 1 updates of $I_n$ and $K$ is symmetric PD with positive entries

Published on 09 Aug 2019 - 15:36

score 96 · Answer 11 · 2019-08-09 17:13:35

96

Views

Inverse of $A^T Y A$

Published on 09 Aug 2019 - 17:13

score 51 · Answer 12 · 2026-03-27 10:09:09

51

Views

A problem on inter-relation between the inverses of a matrix .

Published on 27 Mar 2026 - 10:09

score 55 · Answer 13 · 2026-03-26 17:33:15

55

Views

Showing $ u^T (M+I_n)^{-1} u \geq v^T(M+I_n)^{-1}v $ when $M$ is symmetric PD with positive entries and $u,v$ are $0-1$ vectors

Published on 26 Mar 2026 - 17:33

score 907 · Answer 14 · 2026-03-26 17:36:04

907

Views

Show orthogonal matrix is invertible

Published on 26 Mar 2026 - 17:36

score 103 · Answer 15 · 2026-03-25 17:37:48

103

Views

Inverse of a special block matrix

Published on 25 Mar 2026 - 17:37

List Question

the inverse of $f(x)=x-x^p$

Is non semi-positive definite matrix invertible?

Finding the derivative of $f(x) = \arcsin(\sin(x))$. I get $f'(x)=1$, but the answer is $f'(x)=\frac{\cos x}{|\cos x|}$.

Inverse Matrix ( If there are two different left inverse for a matrix then the matrix has no right inverse)

Direct solution to maximum likelihood computation problem using the derivative of multivariate Gaussian w.r.t. covariance matrix

Find the modular inverse of a number when $b\neq1$

Find the inverse in $F = \frac{\Bbb{Z}_{7}[x]}{g(x)}$ of a polynomial $p(x)$

Trace of $(K+ vv^T)^{-1} (K+uu^T)$

How to invert a block tridiagonal matrix?

Showing $\det\big[ (B+K)^{-1} (A+K) \big] = O(1) $ when $A,B$ are rank 1 updates of $I_n$ and $K$ is symmetric PD with positive entries

Inverse of $A^T Y A$

A problem on inter-relation between the inverses of a matrix .

Showing $ u^T (M+I_n)^{-1} u \geq v^T(M+I_n)^{-1}v $ when $M$ is symmetric PD with positive entries and $u,v$ are $0-1$ vectors

Show orthogonal matrix is invertible

Inverse of a special block matrix

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