Question

Determinant manipulations using known facts

score 2.6k · Answer 1 · 2026-04-15 05:36:03

2.6k

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Determinant manipulations using known facts

Published on 15 Apr 2026 - 5:36

score 20.9k · Answer 2 · 2026-04-14 03:52:14

20.9k

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Prove that $A\mathbf{x}=0$ has a non-zero solution $\mathbf{x}$ iff $\det(A)=0$.

Published on 14 Apr 2026 - 3:52

score 835 · Answer 3 · 2026-04-14 22:13:15

835

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What are the relations between the columns, rows and rank of a matrix A, in order to show that A has an inverse?

Published on 14 Apr 2026 - 22:13

score 1.8k · Answer 4 · 2026-04-14 14:33:55

1.8k

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Find all conditions of a and b for when matrix has determinant zero

Published on 14 Apr 2026 - 14:33

score 64 · Answer 5 · 2026-04-17 00:57:55

64

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Why am I getting inconsistent results measuring the area of this skew triangle?

Published on 17 Apr 2026 - 0:57

score 72 · Answer 6 · 2026-04-16 04:30:40

72

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find $\det(\det(A)B[\det(B)A^{-1}])$

Published on 16 Apr 2026 - 4:30

score 137 · Answer 7 · 2026-04-13 00:59:09

137

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Determinant of the matrix with $a_{i,j}=2\delta_{i,j}-\delta_{i+1,j}-\delta_{i,j+1}$

Published on 13 Apr 2026 - 0:59

score 838 · Answer 8 · 2026-04-15 15:14:47

838

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$\det (e^A) = e^{\text{Tr}(A)}$ without Jordan canonical form, Schur decomposition?

Published on 15 Apr 2026 - 15:14

score 172 · Answer 9 · 2026-04-14 10:23:39

172

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Determinant of big matrix

Published on 14 Apr 2026 - 10:23

score 376 · Answer 10 · 2026-04-12 22:15:17

376

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system of three equations with Cramer's rule

Published on 12 Apr 2026 - 22:15

score 1k · Answer 11 · 2026-04-14 19:43:59

1k

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Determinant of block matrices

Published on 14 Apr 2026 - 19:43

score 94 · Answer 12 · 2026-04-14 08:08:05

94

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Is this problem statement for proving the determinant of a block-matrix possibly incorrect?

Published on 14 Apr 2026 - 8:08

score 356 · Answer 13 · 2026-04-16 01:01:10

356

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Why $\mathrm{adj}(A)\cdot A = A\cdot\mathrm{adj}(A)$?

Published on 16 Apr 2026 - 1:01

score 169 · Answer 14 · 2026-04-15 07:00:39

169

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What is the value of the following determinant?

Published on 15 Apr 2026 - 7:00

score 41 · Answer 15 · 2026-04-16 08:50:23

41

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What is the value of the determinant?

Published on 16 Apr 2026 - 8:50

List Question

Determinant manipulations using known facts

Prove that $A\mathbf{x}=0$ has a non-zero solution $\mathbf{x}$ iff $\det(A)=0$.

What are the relations between the columns, rows and rank of a matrix A, in order to show that A has an inverse?

Find all conditions of a and b for when matrix has determinant zero

Why am I getting inconsistent results measuring the area of this skew triangle?

find $\det(\det(A)B[\det(B)A^{-1}])$

Determinant of the matrix with $a_{i,j}=2\delta_{i,j}-\delta_{i+1,j}-\delta_{i,j+1}$

$\det (e^A) = e^{\text{Tr}(A)}$ without Jordan canonical form, Schur decomposition?

Determinant of big matrix

system of three equations with Cramer's rule

Determinant of block matrices

Is this problem statement for proving the determinant of a block-matrix possibly incorrect?

Why $\mathrm{adj}(A)\cdot A = A\cdot\mathrm{adj}(A)$?

What is the value of the following determinant?

What is the value of the determinant?

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