code: def test_get_dixon_matrix():
      """Test Dixon's resultant for a numerical example."""
  
      x, y = symbols("x, y")
  
      p = x + y
      q = x**2 + y**3
      h = x**2 + y
  
      dixon = DixonResultant([p, q, h], [x, y])
      polynomial = dixon.get_dixon_polynomial()
  
      assert dixon.get_dixon_matrix(polynomial).det() == 0
  
file_path: sympy/sympy/polys/tests/test_multivariate_resultants.py
imports: from sympy.matrices.dense import Matrix
  from sympy.polys.polytools import factor
  from sympy.core import symbols
  from sympy.tensor.indexed import IndexedBase
  from sympy.polys.multivariate_resultants import DixonResultant, MacaulayResultant
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_dixon_matrix() without return types