Online calculator: Determinant of 3x3 matrices
https://planetcalc.com/157Determinant of 3x3 matrices. This calculator calculates the determinant of 3x3 matrices. The determinant is a value defined for a square matrix. It is essential when a matrix is used to solve a system of linear equations (for example Solution of a system of 3 linear equations ). The determinant of 3x3 matrix is defined as.
Determinant - Wikipedia
https://en.wikipedia.org/wiki/DeterminantDeterminants are mainly used as a theoretical tool. They are rarely calculated explicitly in numerical linear algebra, where for applications like checking invertibility and finding eigenvalues the determinant has largely been supplanted by other techniques. Computational geometry, however, does frequently use calculations related to determinants. While the determinant can be computed directly using the Leibniz rule this approach is extremel…