Basically I have been trying to forge an understanding of matrix maths over the last few weeks and after reading (and re-reading) many maths heavy articles and documentation I think I have an adequate understanding, but I just wanted to make sure! The definitions i have ended up with are: /* Minor ----- -A determinant of a sub matri...
I am trying to calculate a determinant using the boost c++ libraries. I found the code for the function InvertMatrix() which I have copied below. Every time I calculate this inverse, I want the determinant as well. I have a good idea how to calculate, by multiplying down the diagonal of the U matrix from the LU decomposition. There i...
As a simple example, let's say you have this matrix: M = [omega 1; 2 omega]; and you need to solve for the values of omega that satisfy the condition det M = 0. How do you do this in MATLAB? It is surely something simple, but I haven't found the function yet. ...
Hi, I'm trying to calculate the inverse matrix in Java. I'm following the adjoint method (first calculation of the adjoint matrix, then transpose this matrix and finally, multiply it for the inverse of the value of the determinant). It works when the matrix is not too big. I've checked that for matrixes up to a size of 12x12 the resul...
I have the following program format compact; format short g; clear; clc; L = 140; J = 77; Jm = 10540; G = 0.8*10^8; d = L/3; for i=1:500000 omegan=1.+0.0001*i; a(1,1) = ((omegan^2)*(Jm/(G*J))*d^2)-2; a(1,2) = 2; a(1,3) = 0; a(1,4) = 0; a(2,1) = 1; a(2,2) = ((omegan^2)*(Jm/(G*J))*d^2)-2; a(2,3) = 1; a(2,4) = 0; a(3,1) = 0; a(3,2...
How do you calculate the determinant of an NxN matrix C# ? ...
Description(this is a hwk question): I am not sure where to start here. I plan to use Laplace's Expansion but I am not sure how to implement it for nxn matrices. Any help would be appreciated. Note: I already have a function to generate random matrices for a nxn matrix. Also the timing the calculation isn't a problem. The only thing I...