code: def objective(x, H, f):
      return 0.5 * dot(dot(x, H), x) + dot(f, x)
  
imports: from numpy import *
  import matplotlib.pyplot
  from test_circle import sparse_circle, circle, sv, x0, y0, R0
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x, H, f) and returns: unknown