#include <stdio.h>

#include "opencv/cv.h"

int main()

{

    double a = 2; //56004.409155979447;

    double b = 1; //-15158.994132169822;

    double c = 1; //215540.83745481662;

    {

        double A[4];

        double InvA[4];

        CvMat matA, matInvA;

        A[0] = a;

        A[1] = A[2] = b;

        A[3] = c;

        cvInitMatHeader( &matA, 2, 2, CV_64F, A );

        cvInitMatHeader( &matInvA, 2, 2, CV_64FC1, InvA );

        cvInvert( &matA, &matInvA, CV_SVD );

        printf("%g\t%g\n%g\t%g\n", InvA[0], InvA[1], InvA[2], InvA[3]);

    }

    return 0;

}