code: def objective(x):
      x0, x1, x2, x3 = x
      return (
          0.6224 * x0 * x2 * x3
          + 1.7781 * x1 * x2**2
          + 3.1661 * x0**2 * x3
          + 19.84 * x0**2 * x2
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x) and returns: unknown