code: def objective(x, a, b, c):
      x, y = x
      eqns = (
          (x - a[0]) ** 2 + (y - b[0]) ** 2 - c[0] ** 2,
          (x - a[1]) ** 2 + (y - b[1]) ** 2 - c[1] ** 2,
          (x - a[2]) ** 2 + (y - b[2]) ** 2 - c[2] ** 2,
      )
      return eqns
  
imports: from mystic import reduced
  from mystic.solvers import diffev2
  from mystic.monitors import VerboseMonitor
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x, a, b, c) and returns: eqns