code: def penalty2(x):  # <= 0.0
      return (
          (4 * x[1] ** 2 - x[0] * x[1])
          / (12566 * x[0] ** 3 * (x[1] - x[0]))
          + 1.0 / (5108 * x[0] ** 2)
          - 1.0
      )
  
file_path: mystic/examples2/spring_alt.py
imports: from spring import objective, bounds, xs, ys
  from mystic.constraints import as_constraint
  from mystic.penalty import quadratic_inequality
label_desc: Use image node_id 2 for calling a global function with example usage: penalty2(x) and returns: unknown