code: def objective(x, a, b, c):
      x0, x1, x2 = x
      eqns = [
          3 * x0 - cos(x1 * x2) + a,
          x0**2 - 81 * (x1 + 0.1) ** 2 + sin(x2) + b,
          exp(-x0 * x1) + 20 * x2 + c,
      ]
      return eqns
  
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x, a, b, c) and returns: eqns