code: def square_root(n, epsilon=0.001):
      """Return square root of n, with maximum absolute error epsilon"""
      guess = n / 2
  
      while abs(guess * guess - n) > epsilon:
          guess = (guess + (n / guess)) / 2
  
      return guess
  
label_desc: Use image node_id 1 for calling a global function with example usage: square_root(n, epsilon) and returns: guess