tensor(-1.3430)
      >>> A
      tensor([[[ 0.9254, -0.6213],
               [-0.5787,  1.6843]],
          [[ 0.3242, -0.9665],
           [ 0.4539, -0.0887]],

          [[ 1.1336, -0.4025],
           [-0.7089,  0.9032]]])
  >>> A.det()
  tensor([1.1990, 0.4099, 0.7386])
  >>> A.det().log()
  tensor([ 0.1815, -0.8917, -0.3031])
