code: def test_KSY_precondition():
      """Tests precondition for KSY Resultant."""
      A, B, C = symbols("A, B, C")
  
      m1 = Matrix([[1, 2, 3], [4, 5, 12], [6, 7, 18]])
  
      m2 = Matrix([[0, C**2], [-2 * C, -(C**2)]])
  
      m3 = Matrix([[1, 0], [0, 1]])
  
      m4 = Matrix([[A**2, 0, 1], [A, 1, 1 / A]])
  
      m5 = Matrix([[5, 1], [2, B], [0, 1], [0, 0]])
  
      assert dixon.KSY_precondition(m1) == False
      assert dixon.KSY_precondition(m2) == True
      assert dixon.KSY_precondition(m3) == True
      assert dixon.KSY_precondition(m4) == False
      assert dixon.KSY_precondition(m5) == True
  
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 6 for calling a global function with example usage: test_KSY_precondition() without return types