code: def F6(x):
      x1, x2 = x
      J0 = np.array([[-4.256, 14.7], [0.8394989, 0.59964207]])
      v = np.array(
          [
              (x1 + 3) * (x2**5 - 7) + 3 * 6,
              np.sin(x2 * np.exp(x1) - 1),
          ]
      )
      return -np.linalg.solve(J0, v)
  
imports: from __future__ import division, print_function, absolute_import
  from numpy.testing import assert_
  import pytest
  from scipy._lib.six import xrange
  from scipy.optimize import nonlin, root
  from numpy import diag, dot
  from numpy.linalg import inv
  import numpy
  from .test_minpack import pressure_network
label_desc: Use image node_id 7 for calling a global function with example usage: F6(x) and returns: unknown