code: def aps07_f(x, n):
      r"""Upside down parabola with parametrizable height"""
      return (1 + (1 - n) ** 2) * x - (1 - n * x) ** 2
  
imports: from random import random
  import numpy
  from scipy.optimize import zeros
label_desc: Use image node_id 31 for calling a global function with example usage: aps07_f(x, n) and returns: unknown