text: from sympy.core.symbol import Symbol
  from sympy.functions.elementary.trigonometric import sin
  from sympy.integrals.trigonometry import trigintegrate
  
  x = Symbol('x')
  
  
  def timeit_trigintegrate_sin3x():
      trigintegrate(sin(x)**3, x)
  
  
  def timeit_trigintegrate_x2():
      trigintegrate(x**2, x)  # -> None
  