code: def objective(z, x):
      """Computes the objectives."""
      normalised_z = (z[0] - 60.0) / 120.0
      vol1 = x[0]  # LiNO3
      vol2 = x[1]  # Li2SO4
      vol3 = x[2]  # NaClO4
      vol4 = 10 - (vol1 + vol2 + vol3)  # Water
      # Synthetic functions
      conductivity = (
          vol1 * normalised_z
          + 0.1 * (vol2 + vol3) ** 2 * (normalised_z**1.5)
          + 2.3 * vol4 * (vol1**1.5)
      )
      return conductivity
  
label_desc: Use image node_id 1 for calling a global function with example usage: objective(z, x) and returns: conductivity