我想用java实现matlab的根函数(多项式的根)

我正在尝试理解根函数。。我正在寻找一个实现类似功能matlab的java代码 r = roots(p) .

例如,如果 p = [1 -6 -72 -27] ,matlab返回 r = 12.1229 -5.7345 -0.3884

我承认我不知道它在实际函数根中的含义,但我需要在我的java应用程序中的算法中使用它。

我尝试在Efficent java矩阵库中使用以下代码:

public class PolynomialRootFinder {

/**
 * <p>
 * Given a set of polynomial coefficients, compute the roots of the polynomial.  Depending on
 * the polynomial being considered the roots may contain complex number.  When complex numbers are
 * present they will come in pairs of complex conjugates.
 * </p>
 *
 * @param coefficients Coefficients of the polynomial.
 * @return The roots of the polynomial
 */
public static Complex64F[] findRoots(double... coefficients) {
    int N = coefficients.length-1;

    // Construct the companion matrix
    DenseMatrix64F c = new DenseMatrix64F(N,N);

    double a = coefficients[N];
    for( int i = 0; i < N; i++ ) {
        c.set(i,N-1,-coefficients[i]/a);
    }
    for( int i = 1; i < N; i++ ) {
        c.set(i,i-1,1);
    }

    // use generalized eigenvalue decomposition to find the roots
    EigenDecomposition<DenseMatrix64F> evd =  DecompositionFactory.eigGeneral(N, false);

    evd.decompose(c);

    Complex64F[] roots = new Complex64F[N];

    for( int i = 0; i < N; i++ ) {
        roots[i] = evd.getEigenvalue(i);
    }

    return roots;
}
}

但此代码返回 [ -2.5747724050560374, -0.17438281737671643, 0.08248855576608725 ] 我提议的例子。

我问你: 这个 roots 函数matlab和java中的roots函数是相同的函数吗? 您有没有想法实现类似于 根 在matlab中?