
What's an intuitive way to think about the determinant?
The determinant of the linear transformation (matrix) T is the signed volume of the region gotten by applying T to the unit cube. (Don’t worry too much if you don’t know what the “signed” part means, …
linear algebra - How to find the determinant of a 5x5 matrix ...
Oct 6, 2016 · How to find the determinant of a 5x5 matrix Ask Question Asked 9 years, 3 months ago Modified 4 years, 7 months ago
Why does a determinant of $0$ mean the matrix isn't invertible?
I always got taught that if the determinant of a matrix is 0 0 then the matrix isn't invertible, but why is that? My flawed attempt at understanding things: This approaches the subject from a geometric point …
The determinant of adjugate matrix - Mathematics Stack Exchange
The matrix on the right is a diagonal matrix with each diagonal entry equal to detA d e t A Thus, its determinant will simply be the product of the diagonal entries, (det A)n (det A) n
What is the origin of the determinant in linear algebra?
Oct 21, 2016 · We often learn in a standard linear algebra course that a determinant is a number associated with a square matrix. We can define the determinant also by saying that it is the sum of …
What is the real meaning of the determinant of a matrix?
Mar 30, 2015 · The absolute value of the determinant of a matrix is the volume of the parallepiped spanned by the vectors in the matrix. Parallelpiped is the 3d version of a parallelogram. The rows of …
Insightful proofs for Sherman-Morrison Formula and Matrix …
Apr 16, 2017 · Insightful proofs for Sherman-Morrison Formula and Matrix Determinant Lemma Ask Question Asked 13 years, 1 month ago Modified 2 years, 9 months ago
The relation between trace and determinant of a matrix
The determinant and the trace are two quite different beasts, little relation can be found among them. If the matrix is not only symmetric (hermitic) but also positive semi-definite, then its eigenvalues are …
Proving the formula for finding the determinant of a square matrix.
However, unlike the 2 × 2 2 × 2 matrix determinant formula, no proof is given. Similarly, the formula for the determinant of an n × n n × n matrix is not given in my textbook. Unfortunately, I can't seem to …
linear algebra - "Tricks" for solving the determinant of a matrix ...
Jul 21, 2013 · Anyway, the tricks you can use depends on your matrix. For example, if it has two similar rows, you can reduce by rows to obtain a lot of zeros which makes simpler your computation. …