Java inverse matrix calculation

Question

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 fina

Answer 1

By ACM you can do this without rhs:

RealMatrix A = new Array2DRowRealMatrix(ARR);
System.out.println(new LUDecomposition(A).getSolver().getInverse());