how can I find inverse of a matrix that has zero determinant and infinitely many solutions?
61359
Set of Linear equation has no solution or unique solution or infinite solution?
7205
Find the determinant of $A + I$, where $A$ is a real matrix such that $AA^{\top}=I$ and $\det A<0$.
40706
Computing determinant without expansion
91028
determinant of a matrix with binomial coefficient entries
119301
Is the following matrix invertible?
58491
Proving the inverse of a matrix as a polynomial of matrices
145768
The inverse of a matrix in which the sum of each row is $1$
90982
How to find the determinant of this $3 \times 3$ Hankel matrix?
124149
Inverse of matrix with nonnegative entries
110484
Condition on a matrix so that its determinant is $2$
17584
Integer matrices with integer inverses
10793
How to compute the determinant of a tridiagonal matrix with constant diagonals?
116136
Proof that the inverse of a square matrix is unique
91812
Using inverse of transpose matrix to cancel out terms?
25159
Why does the inverse of the Hilbert matrix have integer entries?
51406
Determinant of a block matrix times the determinant of the inverse of a block
129564
Show that $A$ is an invertible matrix if $\left(A+I\right)^3=0$ and find $A^{-1}$