code: def currin_exp_01(x):
      """Currin exponential function."""
      x1 = x[0]
      x2 = x[1]
      val_1 = 1 - np.exp(-1 / (2 * x2))
      val_2 = (2300 * x1**3 + 1900 * x1**2 + 2092 * x1 + 60) / (
          100 * x1**3 + 500 * x1**2 + 4 * x1 + 20
      )
      return float(val_1 * val_2)
  
imports: import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: currin_exp_01(x) and returns: float