code: def test_solve_arg2():
      D = 6
      A = npr.randn(D, D) + 1.0 * np.eye(D)
      B = npr.randn(D, D - 1)
  
      def fun(b):
          return np.linalg.solve(A, b)
  
      check_grads(fun)(B)
  
imports: from __future__ import absolute_import
  from builtins import range
  import itertools
  import autograd.numpy
  import autograd.numpy.random
  from autograd.test_util import check_grads
  from autograd import tuple
  from autograd import grad
  from functools import partial
  import pytest
label_desc: Use image node_id 8 for calling a global function with example usage: test_solve_arg2() and returns: np