code: def aps14_f(x, n):
      r"""0 for negative x-values, trigonometric+linear for x positive"""
      if x <= 0:
          return -n / 20.0
      return n / 20.0 * (x / 1.5 + np.sin(x) - 1)
  
imports: from __future__ import division, print_function, absolute_import
  from random import random
  import numpy
  from scipy.optimize import zeros
label_desc: Use image node_id 52 for calling a global function with example usage: aps14_f(x, n) and returns: unknown, unknown