ｘ３７６ - 経済統計練習帳

package math;
 
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.math3.linear.Array2DRowRealMatrix;
import org.apache.commons.math3.linear.ArrayRealVector;
import org.apache.commons.math3.linear.LUDecomposition;
import org.apache.commons.math3.linear.RealMatrix;
import org.apache.commons.math3.linear.RealVector;
import org.apache.commons.math3.linear.MatrixUtils;
 
 
 
class pro{
 
public static void main(String[] args) {
 
pro test=new pro();
}
 
pro(){
 
    double[][] matrixData = { {1d,2d,3d}, {2d,5d,3d}};
RealMatrix m = MatrixUtils.createRealMatrix(matrixData);
 
 
 
 
 double[][] matrixData2 = { {1d,2d}, {2d,5d}, {1d, 7d}};
RealMatrix n = new Array2DRowRealMatrix(matrixData2);
 
RealMatrix p = m.multiply(n);
RealMatrix pInverse = new LUDecomposition(p).getSolver().getInverse();
 
 
 
 
 
}
}