Question

Matrix Algebra Determinant: What's Wrong Here?

score 78 · Answer 1 · 2018-02-22 21:02:08

78

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Matrix Algebra Determinant: What's Wrong Here?

Published on 22 Feb 2018 - 21:02

score 649 · Answer 2 · 2018-02-23 05:43:43

649

Views

Show that the matrix $cA+B$ is not invertible

Published on 23 Feb 2018 - 5:43

score 72 · Answer 3 · 2018-02-23 15:45:27

72

Views

Calculate the determinant of a special matrix

Published on 23 Feb 2018 - 15:45

score 114 · Answer 4 · 2026-03-25 06:12:42

114

Views

Similarity of $3\times3$ matrices via Jordan canonical form

Published on 25 Mar 2026 - 6:12

score 32 · Answer 5 · 2018-02-23 21:23:20

32

Views

Evaluating Determinant (answer check)

Published on 23 Feb 2018 - 21:23

score 539 · Answer 6 · 2018-02-24 09:53:40

539

Views

Show that if $p(x)=a+bx+cx^2$ is a 2nd degree polynomial such that $p(1)=p(2)=p(3)=0$ then $p(x)=0$, using determinants.

Published on 24 Feb 2018 - 9:53

score 157 · Answer 7 · 2018-02-24 15:20:16

157

Views

$\det (A+B)=\det (A-B)$, prove that $B^{-1}$ exists iff $b_{11}\neq b_{21}$

Published on 24 Feb 2018 - 15:20

score 411 · Answer 8 · 2018-02-25 02:54:49

411

Views

Largest determinant possible of n by n matrix?

Published on 25 Feb 2018 - 2:54

score 3k · Answer 9 · 2026-03-25 05:06:48

3k

Views

Justify, without evaluating, that the determinant of the following matrix is zero

Published on 25 Mar 2026 - 5:06

score 1.6k · Answer 10 · 2026-03-25 10:21:48

1.6k

Views

If $A$, $B$ and $C$ are the angles of a triangle then find the value of $\Delta$

Published on 25 Mar 2026 - 10:21

score 1k · Answer 11 · 2026-03-25 09:26:36

1k

Views

Can some proof that $\det(A) \ne 0$ be checked faster than matrix multiplication?

Published on 25 Mar 2026 - 9:26

score 139 · Answer 12 · 2026-03-25 06:21:17

139

Views

Idea is correct, proof lacks rigor, coefficient of $t$ in $\det(I+tA)$

Published on 25 Mar 2026 - 6:21

score 76 · Answer 13 · 2018-02-26 12:35:09

76

Views

Evaluate a $n\times n$ special determinant

Published on 26 Feb 2018 - 12:35

score 727 · Answer 14 · 2026-03-25 03:01:26

727

Views

Gauss Jordan inverse matrix, row of all zeros

Published on 25 Mar 2026 - 3:01

score 404 · Answer 15 · 2018-02-28 00:01:18

404

Views

Generate a $5 × 5$ matrix such that the each entry is an integer between $1$ and $9$, inclusive, and whose determinant is divisible by $271$.

Published on 28 Feb 2018 - 0:01

List Question

Matrix Algebra Determinant: What's Wrong Here?

Show that the matrix $cA+B$ is not invertible

Calculate the determinant of a special matrix

Similarity of $3\times3$ matrices via Jordan canonical form

Evaluating Determinant (answer check)

Show that if $p(x)=a+bx+cx^2$ is a 2nd degree polynomial such that $p(1)=p(2)=p(3)=0$ then $p(x)=0$, using determinants.

$\det (A+B)=\det (A-B)$, prove that $B^{-1}$ exists iff $b_{11}\neq b_{21}$

Largest determinant possible of n by n matrix?

Justify, without evaluating, that the determinant of the following matrix is zero

If $A$, $B$ and $C$ are the angles of a triangle then find the value of $\Delta$

Can some proof that $\det(A) \ne 0$ be checked faster than matrix multiplication?

Idea is correct, proof lacks rigor, coefficient of $t$ in $\det(I+tA)$

Evaluate a $n\times n$ special determinant

Gauss Jordan inverse matrix, row of all zeros

Generate a $5 × 5$ matrix such that the each entry is an integer between $1$ and $9$, inclusive, and whose determinant is divisible by $271$.

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