code: def objective(x):
      return x[0] + 2 * x[1]
  
imports: from mystic.symbolic import generate_penalty, generate_conditions
  from mystic.symbolic import generate_constraint, generate_solvers, simplify
  from mystic.constraints import integers
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x) and returns: unknown