text: import aerosandbox as asb
  import aerosandbox.numpy as np
  
  def add(x, y):
      return x + y
  
  def multiply(x, y):
      return x * y
  
  def square(x):
      return x ** 2
  
  def ln(x):
      return np.log(np.abs(x))
  
  def sin(x):
      return np.sin(x)