code: def kotanchek(data):
      r"""Kotanchek benchmark function.
  
      .. list-table::
         :widths: 10 50
         :stub-columns: 1
  
         * - Range
           - :math:`\mathbf{x} \in [-1, 7]^2`
         * - Function
           - :math:`f(\mathbf{x}) = \\frac{e^{-(x_1 - 1)^2}}{3.2 + (x_2 - 2.5)^2}`
      """
      return exp(-((data[0] - 1) ** 2)) / (3.2 + (data[1] - 2.5) ** 2)
  
file_path: deap/deap/benchmarks/gp.py
imports: from math import exp, sin, cos
label_desc: Use image node_id 1 for calling a global function with example usage: kotanchek(data) and returns: unknown