code: def test_nx2x2_input(self, xp, scp, a):
      a = xp.asarray(a)
      return scp.linalg.expm(a)
  
file_path: cupy/tests/cupyx_tests/scipy_tests/linalg_tests/test_matfuncs.py
imports: import numpy
  from numpy import linalg
  import cupy
  from cupyx.scipy.linalg import khatri_rao
  from cupyx.scipy import linalg
  import pytest
  from cupy import testing
label_desc: Use image node_id 4 for calling the TestExpM obj's underlying member method code with example usage: obj.test_nx2x2_input(xp, scp, a) and returns: scp