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void MatrixMultiply(double *mA, double *mB, int rowa, int cola, int colb, double *mC); 
 
double Determinant(double *c,int vars); 
 
 
void interchange(double *c,int vars,int row_1,int row_2); 
 
 
void add(double *c,int vars,double u,int row_1, int row_2); 
 
bool	MatrixInv(double *a, int n); 
 
void MatrixMultiplyFloat(float *mA, float *mB, int rowa, int cola, int colb, float *mC);