code: def sub_park_2(x):
      """Computes the park function"""
      x1 = x[0]
      x2 = x[1]
      x3 = x[2]
      x4 = x[3]
      ret = (2.0 / 3.0) * np.exp(x1 + 2 * x2) - x4 * np.sin(x3) + x3
      return ret
  
file_path: dragonfly/examples/synthetic/park2_4/park2_4.py
imports: import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: sub_park_2(x) and returns: ret