code: def _beale(coord):
      """See https://www.sfu.ca/~ssurjano/beale.html."""
      x = coord[0]
      y = coord[1]
      term1 = (1.5 - x + x * y) ** 2
      term2 = (2.25 - x + x * y**2) ** 2
      term3 = (2.625 - x + x * y**3) ** 2
      return term1 + term2 + term3
  
imports: import numpy
  import tensorflow.compat.v2
  import tf_quant_finance
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 5 for calling a global function with example usage: _beale(coord) and returns: unknown