code: def det(a):
      """Computes the determinant of a single square matrix.
  
      Args:
          a (:class:`~chainer.Variable` or :ref:`ndarray`):
              Input array to compute the determinant for.
  
      Returns:
          ~chainer.Variable: Scalar determinant of the matrix a.
  
      """
      shape = (1, a.shape[0], a.shape[1])
      batched_a = chainer.functions.reshape(a, shape)
      batched_det = BatchDet().apply((batched_a,))[0]
      return chainer.functions.reshape(batched_det, ())
  
file_path: chainer/chainer/functions/math/det.py
imports: import chainer
  from chainer import function_node
  import chainer.functions
  from chainer.utils import precision
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling a global function with example usage: det(a) and returns: chainer